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Natural Features Topic

 
By Mark Hilton, August 22, 2018
Looking west from marker into Mobile Bay.
1 Alabama, Baldwin County, Gulf Shores — Here ends the Alabama Scenic River Trail
Historic 650 miles Water Route along the Coosa, Alabama and Mobile Rivers _________ Beginning on the Coosa River at the Alabama-Georgia State Line Established 2007Map (db m122443) HM
2 Alabama, Blount County, Oneonta — Champion Mines
John Hanby came in 1817 and found a rich seam of brown iron ore. Named Champion in 1882 when Henry DeBardeleben and James Sloss bought land and brought L&N Railroad causing county seat to be moved from Blountsville to Oneonta in 1889. Most ore was . . . Map (db m28362) HM
3 Alabama, Clay County, Delta — Alabama's Highest Point
Everyone needs beauty as well as bread, places to play in and pray in where nature may heal and give strength to body and soul. –John Muir Mount Cheaha is Alabama's highest point at 2,407 feet above sea level and is part of the . . . Map (db m175329) HM
4 Alabama, Colbert County, Tuscumbia — Petrified Conifer Tree / Petrified Lycopod Tree Stump
Plaque A 85-90 Million Years Old Possibly a Bald Cypress from the Cretaceous Period or the Age of Dinosaurs Plaque B 325 Million Years Old A Member of the Giant Club Mosses from the early Coal AgeMap (db m29287) HM
5 Alabama, Jackson County, Woodville — Cathedral Caverns
Cathedral Caverns has been designated a Registered Natural Landmark under the provisions of the Historic Sites Act of August 21, 1935. This site possesses exceptional value in illustrating the natural history of the United States.Map (db m76233) HM
6 Alabama, Jefferson County, Birmingham, Five Points South — Reading Red Mountain
The Big Seam The red iron ore labeled "The Big Seam" in the diagram below appears as an outcrop over this sign. It extends all the way to Gadsden, 60 miles to the northeast. To the south, it runs as far as Hoover, where it is a mile . . . Map (db m188879) HM
7 Alabama, Jefferson County, Clay — The Cahaba Heart River of Alabama
On Cahaba Mountain to the NW, springs form a fragile stream that grows as it carves through the steep, rocky terrain of Birmingham suburbs, flowing south on the Gulf Coastal Plain to the Alabama River, at the site of Alabama's first capital, . . . Map (db m25110) HM
8 Alabama, Jefferson County, Pinson — Pinson, Alabama
Pinson, one of Alabama’s oldest communities, was settled by General Andrew Jackson’s soldiers in the early 1800s, after victory at Horseshoe Bend during the War of 1812. The community was originally known as Hagood’s Crossroads for settler . . . Map (db m88406) HM
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9 Alabama, Lauderdale County, Waterloo — Mud Glorious Mud
Birds Come From All Directions to Enjoy the Tasty Treats Hidden Beneath the Mud In the late summer. fall, and winter, reservoir levels in the Tennessee River Valley drop drastically to expose areas of mudflats. although unsightly to some, theses . . . Map (db m105713) HM
10 Alabama, Lauderdale County, Waterloo — Rock Spring
Rock Spring Nature Trail offers you an opportunity to explore a small natural spring as it bubbles forth from the ground. Small fish dart about a deep pool created as the stream wandered through rich bottomland soil and limestone rock. Vegetation . . . Map (db m84703) HM
11 Alabama, Madison County, Huntsville — Burritt Museum
Situated on 167 acres of some of the most scenic land in North Alabama, the museum and its grounds contain items of local and national interest. This property was willed to the City of Huntsville in 1955 by Dr. William Henry Burritt . . . Map (db m27876) HM
12 Alabama, Madison County, Huntsville — Old Town Historic District
Designated by the City of Huntsville, Alabama on December 12, 1974 as a Huntsville historic district, it contains houses dating from 1828 onward with the majority dating from 1880 to 1929. Approximate boundaries: East Clinton Avenue north to . . . Map (db m30381) HM
13 Alabama, Marengo County, Demopolis — White Bluff
Composed of limestone or “Selma chalk” which abounds in fossils. Called “Ecor Blanc” by eighteenth-century French explorers and cartographers. Named “Chickasaw Gallery” because early Indian inhabitants . . . Map (db m38001) HM
14 Alabama, Marshall County, Guntersville — Section of Core
Drilled from limestone bedrock during construction of Guntersville Dam, 1935 - 1938Map (db m85903) HM
15 Alabama, Talladega County, Childersburg — DeSoto Caverns
Named for the famous Spanish explorer who traveled through this area in 1540. Over its rich history it offered shelter for native Indians for centuries (a 2,000-year-old Woodland Period burial was excavated by archeologists in the mid-1960s), . . . Map (db m45034) HM
16 Alabama, Tuscaloosa County, Tuscaloosa — Burns’ Shoals
The remains of Burns' Shoals now lie nearly 40 feet underwater. This rock outcropping was the first of the shoals known as the "Falls of Tuscaloosa" and represents the "Fall Line" or contact point of the Coastal Plain and the Appalachian Plateau, . . . Map (db m28904) HM
17 Alabama, Tuscaloosa County, Tuscaloosa — Marr’s Spring
Part of Marr’s Field, on farmland owned by William Marr, this spring was a major factor in the selection of this site for the University of Alabama campus in 1827. From its opening in 1831 well into the 20th century, the institution relied upon . . . Map (db m40388) HM
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18 Alabama, Tuscaloosa County, Tuscaloosa — Why Are We Here?City of Tuscaloosa
Since ancient times, people have been attracted to this area because of ease of accessibility and abundant resources. Tuscaloosa lies at an important point where the Black Warrior River crosses the boundary of the Coastal Plain and the Appalachian . . . Map (db m217172) HM
19 Alaska, Anchorage, Bird Creek — Traveling TikahtuTraveling the Cook Inlet
“Whenever the [upriver Dena'ina<] needed anything,... they come down to Alexander Creek to trade for beluga grease, seal oil...and they gave [coastal Dena'ina] caribou skins and marten skins. They helped each other, for the were the . . . Map (db m283052) HM
20 Alaska, Denali Borough, Denali National Park and Preserve — Mountains in Motion / Hot Rocks
Mountains in Motion Though the visible glaciers appear remote - gleaming between distant peaks - the valley below is strewn with signs of masses glaciation: stranded boulders, gouged-out ponds, and gravel outwash plains. The last big . . . Map (db m71362) HM
21 Alaska, Denali Borough, Denali National Park and Preserve — The Time-Honored TrailDenali National Park and Preserve — National Park Service, U.S. Department of the Interior —
Many things have changed since the park was created and the railroad was completed, but the route to the park remains the same. Whether you traveled the historic rail line or modern highway, you took the route taken by the park's first visitors. . . . Map (db m283503) HM
22 Alaska, Fairbanks North Star Borough, College — Boreal forest: living around Thompson Drive
Life in the boreal forest Boreal forest forms a belt that circles the northern part of the globe, including Canada, Russia, Scandinavia and Alaska. The location of boreal forest ecosystems is generally determined by soil temperature, . . . Map (db m256286) HM
23 Alaska, Juneau Borough, Juneau, Mendenhall Valley — A View in Time
Natural and cultural forces reshaped the landscape through plant succession and human development. Small changes had dramatic effects over time. On a daily basis the movement of the glacier was often unnoticeable As the glacier sets, . . . Map (db m282929) HM
24 Alaska, Juneau Borough, Juneau, Mendenhall Valley — Changing ViewsTrail of Time — Tongass National Forest —
The spot on which you stand was underneath the Mendenhall Glacier in 1921. The photo above was taken approximately ¼ mile south of here, near the 1930 parking area.Map (db m283005) HM
25 Alaska, Juneau Borough, Juneau, Mendenhall Valley — Looking BackTrail of Time — Tongass National Forest —
The pavement may end but your journey through time begins. Today the cues to the past on the trail ahead are obscured by vegetation. Close examination of this 1939 photograph reveals features along the trail head of you. Note the . . . Map (db m283002) HM
26 Alaska, Matanuska-Susitna Borough, Sutton-Alpine — A Glacial Pace
Don't blink or you'll miss it-glaciers are on the move. Research has taught us more about how glaciers move than we've ever known before. Tracking a Moving Glacier A glacier's pace varies like a river's speed as . . . Map (db m255273) HM
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27 Alaska, Matanuska-Susitna Borough, Sutton-Alpine — Chugach Mountains
The mountains across the Matanuska River are part of the Chugach Mountain Range. The Chugach Mountains extend in an arc for roughly 350 miles, bordering Cook Inlet near Anchorage, Prince William Sound and on toward Icy Bay where they meld with . . . Map (db m254977) HM
28 Alaska, Matanuska-Susitna Borough, Sutton-Alpine — Talkeetna Mountains
The mountain dominating the view to the north is Granite Peak. At 6,729 feet tall, it is one of the highest mountains on the front range of the Talkeetna Mountains (you are standing at 500 feet). It can be spotted easily from Anchorage on a . . . Map (db m254986) HM
29 Alaska, Skagway — Pitch Fork Falls — White Pass & Yukon Route —
460 Miles south of the Arctic Circle on Meridian Elevation 1014ft. Roar built 1898 to 1900. This is one of many scenic spots enroute to Atlin and DawsonMap (db m283060) HM
30 Alaska, Skagway, Dyea — Asaayíx' Kudziteey Haa Léelk'u Hás AaníThis Land of our Grandparents Has Tlingit Names — Traditional Place Names of the Skagway Area —
* Lkóot Aaní (Chilkoot) Lkóot Aaní is the name of the area from Haines to Skagway, and the name originates from Lkóot Áa ("The Lake that Puked" [Chilkoot Lake]), where a massive rock . . . Map (db m248858) HM
31 Alaska, Valdez-Cordova Census Area, Tolsona — The Wrangell Mountains
On a clear day straight down the road to the east you can see the Wrangell Mts. They are [from left to right] Mt. Sanford 16,237 ft; Mt Drum 12,010 ft.; Mt. Wrangell 14,163 ft; Mt Blackburn 16,390 ft. Mt Wrangell is the largest . . . Map (db m255350) HM
32 Arizona, Apache County, Adamana — Jasper Forest Reported permanently removed
The petrified wood strewn in the valley below was once encased in the bluffs around you. When erosional forces removed the softer rocks, the petrified wood tumbled and accumulated on the valley floor. Once filled with fallen logs, Jasper Forest . . . Map (db m269587) HM
33 Arizona, Apache County, Chambers — Badlands
Geologists call eroded landscapes such as the Painted Desert "badlands." Summer thunderstorms and winter snowmelt carve the shale and sandstone into mazes of sharp ridges, steep hillsides, and deep V-shaped gullies. Practically waterless, badlands . . . Map (db m72923) HM
34 Arizona, Apache County, Chambers — Painted Desert / Finding Fossils Reported missing
The colorful mesas, buttes, and badlands before you compose a natural work of art--the Painted Desert. Wind and running water cut these features from the Chinle Formation deposited over 200 million years ago when this area was a vast inland . . . Map (db m72925) HM
35 Arizona, Apache County, Petrified Forest National Park — A Painted ParkPetrified Forest National Park
As you look out over the Painted Desert, you are only seeing a small portion of it. The Painted Desert extends over 7,500 square miles (19,425 km²) across northeastern Arizona. Because Petrified Forest National Park lies at its heart, the entire . . . Map (db m163185) HM
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36 Arizona, Apache County, Petrified Forest National Park — Over the EdgePetrified Forest National Park
Below you lies a black basalt which forms the rim of the plateau on which you stand. This hard basalt, called the Bidahochi Formation, was deposited by local volcanoes between 16 and five million years ago, and forms a protective cap over the soft, . . . Map (db m163270) HM
37 Arizona, Apache County, Springerville — 1 — Escudilla Mountain
Due south rises the 3rd tallest peak in AZ, revered by conservationist, Aldo Leopold Escudilla was home to Ike Clanton of OK Corral fame & Arizona's last grizzly bear. In fall, the north slope is golden with Aspen covering the 23,000 acre fire of . . . Map (db m36592) HM
38 Arizona, Apache County, Window Rock — In Remembrance of Our Warriors / Navajo Warrior Memorial
In Remembrance of Our Warriors Who Made the Ultimate Sacrifice and/or Missing in Action, They will never be forgotten and to us they will always be young in our thoughts. Nelson Lewis • Walter Nelson • Willie A. Notah • Edie . . . Map (db m27911) HM
39 Arizona, Cochise County, Bowie — 086-352 — Old Fort BowieGuardian of Apache Pass
Established 1862 following the Battle of Apache Pass, largest conflict in Arizona Indian Wars. Massed Apaches under Cochise and Mangas Coloradas were routed by howitzers fired by California Volunteers attacked in the pass. Fort Bowie overlooked . . . Map (db m6994) HM
40 Arizona, Coconino County, Flagstaff — Geology
In northern Arizona, the history by the earth is revealed on a gigantic scale. Exposures of rock at the bottom of Grand Canyon reveal two episodes of mountain building, each separated by extensive erosion. These rocks, from two billion to 570 . . . Map (db m263751) HM
41 Arizona, Coconino County, Flagstaff — The Citadel / Natural Features
The Citadel It was a remarkable achievement, to use primitive mortar and local stones to build the walls above you straight up from the edge of the top of the rock. “The Citadel” is the modern name given to this ruin because . . . Map (db m60087) HM
42 Arizona, Coconino County, Grand Canyon National Park — Grandview, 1898
"No language can fully describe, no artist paint the beauty, grandeur, immensity and sublimity of this most wonderful production of Nature's great architect. [Grand Canyon] must be seen to be appreciated." C.O. Hall, Grand . . . Map (db m39659) HM
43 Arizona, Coconino County, Peach Springs — Grand Canyon Caverns
In 1927 Walter Peck, a cowboy and wood cutter, was walking through this area on his way to play poker when he nearly fell into a hole in the ground. The next morning Peck and his friends returned to the hole with lanterns and ropes. Peck was lowered . . . Map (db m288664) HM
44 Arizona, Coconino County, Sunset Crater Volcano National Monument — As Powerful as a Volcano
Cinder cones erode easily and scars are slow to heal. In 1973, Sunset Crater was closed to climbing when 2-foot-wide trails eroded to 60-foot-wide swaths. Tons of cinder were shoveled back up the cone to fill hip-deep trenches. Notice the scars . . . Map (db m41676) HM
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45 Arizona, Coconino County, Sunset Crater Volcano National Monument — Life and Landscape Transformed
The landscape before you has existed on Earth for less than 1,000 years, less time than Romanesque architecture or paper money. Consequently, this environment has unique scientific value. Geologists come here to study weathering processes and . . . Map (db m41691) HM
46 Arizona, Coconino County, Sunset Crater Volcano National Monument — The Birth of a Mountain
About 1,000 years ago, something spectacular happened in the lives of local Native peoples. Perhaps they first observed a change in animal behavior. Maybe they noticed the ground warming. Then the tremors increased in number and intensity. By the . . . Map (db m41689) HM
47 Arizona, Mohave County, Fredonia — How Can 10 Million Gallons of Water a Year Suddenly Appear in a Stony Desert? — Pipe Spring National Monument —
The answer lies buried in the white and red rocks you can see ahead. Here about 90 percent of any rain and snow is absorbed by plants or quickly evaporates. Only 10 percent of Pipe Spring’s precipitation soaks into the light-colored rock you see at . . . Map (db m149469) HM
48 Arizona, Mohave County, Fredonia — Remnants of a Frozen Sahara — Pipe Spring National Monument —
The pale rock you see here is Navajo sandstone. This rock caps the top of the Vermilion Cliffs for more than 80 miles. Navajo sandstone also forms the high canyon walls at Zion National Park. Imagine an enormous Sahara-like desert, full of . . . Map (db m149385) HM
49 Arizona, Navajo County, Holbrook — A Gap in the Geologic Record
The black basalt that caps the cliffs before you stands in stark contrast to the colorful Chinle Formation visible throughout the Painted Desert. Below this layer of basalt, a horizontal line cuts across the face of the mesa and separates rocks . . . Map (db m68901) HM
50 Arizona, Navajo County, Holbrook — Desert Vistas
From Pintado Point, vistas of remarkable clarity extend far beyond boundaries because the air quality in the surrounding Petrified Forest is among the purest in the continental United States. At times, the San Francisco Peaks, 120 miles (193 km) . . . Map (db m68903) HM
51 Arizona, Navajo County, Holbrook — From Wood to Stone
Approximately 225 million years ago, during the Triassic Period, a floodplain existed here – littered with fallen trees. Periodic flooding buried the logs beneath layers of silt. Over time, silica-laden waters filtered through these deposits . . . Map (db m68870) HM
52 Arizona, Navajo County, Holbrook — Painted Desert Community Complex Historic District
. . . Map (db m36387) HM
53 Arizona, Navajo County, Holbrook — The Painted Desert
The Painted Desert stretches before you as an outdoor museum of fossilized plants and animals. Its striking colors emanate from the Chinle Formation of the Late Triassic, which has been eroded by the Little Colorado River drainage system. An . . . Map (db m68896) HM
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54 Arizona, Navajo County, Holbrook — Triassic Landscape Reported permanently removed
The dry plateau lands of this region today are far different from the tree-littered floodplains of 225 million years ago during the geologic period called the Triassic. Imagine a forested Triassic land where crocodile-like phytosaurs inhabited . . . Map (db m269589) HM
55 Arizona, Navajo County, Shonto — A Relict ForestNavajo National Monument
Before you lies a small tributary of the Tsegi Canyon watershed. A quaking aspen grove graces the canyon floor, while the north-facing cliff (right) offers shady habitat for towering Douglas-fir trees. Thriving here in this desert wilderness is . . . Map (db m144450) HM
56 Arizona, Navajo County, Shonto — Upside-down MountainNavajo National Monument
Hidden away in Tsegi Canyon’s wilderness of bare rock, sand, and sparse vegetation are surprising pockets of luxuriant growth. Betatakin Canyon—home to a village of prehistoric cliff-dwellings farmers—is one of these oases. Fir Canyon, . . . Map (db m71514) HM
57 Arizona, Navajo County, Winslow — Sunset Crossing
This crossing, first noted early in the 1850s in journals and maps of explorers along the 35th parallel, is the only convergence of major travel routes on the Little Colorado River. It lies on the trail used by Mormon immigrants journeying from Utah . . . Map (db m32722) HM
58 Arizona, Pima County, Tucson, Menlo Park — Sentinel Peak
Used as a lookout and for signal fires by the Indians prior to and since 1692 and later by early settlersMap (db m38401) HM
59 Arizona, Pima County, Vail — Colossal Cave Mountain Park
This Property has been placed on the National Register of Historic Places By the United States Department of the Interior Colossal Cave Mountain Park 1934Map (db m30613) HM
60 Arizona, Yavapai County, Sedona — Wilson Mtn. TrailNational Recreational Trail
Richard Wilson was an old bear hunter who lived at Indian Gardens. In 1885 he was killed by a large grizzly bear in what is now known as Wilson Canyon.Map (db m99272) HM
61 Arkansas, Arkansas County, Arkansas Post — The Post of Arkansas
Here on the Grand Prairie you tread on soil laid down over the centuries as the mighty Mississippi and Arkansas Rivers brought down their precious cargoes of silt from the northern uplands. The footprints of many were pressed into this . . . Map (db m108486) HM
62 Arkansas, Carroll County, Eureka Springs — Calif SpringSouth Main
Calif Spring was originally called Table Rock Spring, named for the rock formation above the spring area. This area was set aside as a spring reservation in 1886 by City Ordinance. S. L. Calif established a residence and general store next to the . . . Map (db m90703) HM
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63 Arkansas, Clay County, St. Francis — Chalk Bluff
Named for the white clay which resembles chalk, this magnificent bluff is one of the most important historical landmarks in Arkansas. At this point the St. Francis River cuts through Crowley's Ridge from west to east and forms the boundary between . . . Map (db m18136) HM
64 Arkansas, Crawford County, Van Buren — Log Town Hill
The residents of Log Town were witness to the retreat of the Rebel army through Van Buren and onward through their settlement. High on Log Town Hill the community watched as masses of Southern soldiers crowded the hill trying desperately to reach . . . Map (db m96614) HM
65 Arkansas, Garland County, Hot Springs — DeSoto Camp
This valley, long known by the Indians as "Tah-Ne-Co," "The Place of the Hot Waters" and according to tradition regarded by the different tribes as neutral ground, was first visited by white men on September 16, 1541, when Hernando De Soto and his . . . Map (db m170754) HM
66 Arkansas, Garland County, Hot Springs — Hot Springs
After 1877 when the title to the springs was finally vested in the federal government by the Supreme Court, Congress began to take an active interest in the Hot Springs Reservation. In 1921 the Reservation officially became Hot Springs National Park.Map (db m103164) HM
67 Arkansas, Garland County, Hot Springs, Hot Springs National Park — Geology Rocks!
Many years ago, this region of Arkansas was at the bottom of a deep ocean. Mud slowly built up on the seafloor and eventually became shale, a rock that results from mud subjected to high pressure and temperatures. Built up sand became sandstone, . . . Map (db m297081) HM
68 Arkansas, Garland County, Hot Springs, Hot Springs National Park — Ral City
In 1877, General Benjamin F. Kelley arrived at Hot Springs Reservation as the first superintendent. He was quickly approached by bathhouse owners to solve the "problem" of the poor people living in a tent city known as "Ral City" on Hot Springs . . . Map (db m297084) HM
69 Arkansas, Garland County, Hot Springs, Hot Springs National Park — The Zig Zag Mountains
Formed as the continent Pangaea came together about 300 million years ago, the Ouachita Mountains are the only significant mountain range on the continent that trends east to west, unlike the Rocky Mountains or the Appalachians, which trend . . . Map (db m297077) HM
70 Arkansas, Garland County, Hot Springs, Hot Springs National Park — Water Quality through Time
In January of 1859, surveyors measured 54 springs, numbering them according to their temperatures. The average recorded temperature of the hot springs was 134 °F (56.7 °C), and their flow was measured at about 450,000 gallons per day. Today, with . . . Map (db m297082) HM
71 Arkansas, Garland County, Mountain Pine — Three Sisters Springs History
During the mid-1800's Hot Springs rapidly became a nationally known health resort. At that time it was an accepted fact that many diseases could be cured by drinking or bathing in the area's mineral waters. So, it was natural that other . . . Map (db m297090) HM
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72 Arkansas, Jefferson County, Pine Bluff — Bayou Bartholomew
Beginning 10 miles northwest of Pine Bluff, this storied bayou flows 300 miles through 6 Arkansas counties and 2 Louisiana parishes before emptying into the Ouachita River in north Louisiana. Indian mounds dotted its banks. Immigrants travelled it . . . Map (db m30581) HM
73 Arkansas, Phillips County, Helena — Battery A
Union forces entrenched on this hill held off repeated assaults by Confederate troops under CSA General Marmaduke on the morning of July 4, 1863, in their attack on Helena. CSA General Marsh Walker's Cavalry Brigade, consisting of the 5th Arkansas . . . Map (db m107784) HM
74 Arkansas, Phillips County, Helena — Battery D
Hindman Hill, southernmost of four positions fortified by Union Forces in June, 1863, was attacked by the 35th, 37th, and Hawthorn's Arkansas Infantry Regiments under General Fagan, CSA at daybreak, July 4, 1863. Thwarted by the strength of the . . . Map (db m107791) HM
75 Arkansas, Pike County, Murfreesboro — A Multifaceted History
The history of commercial diamond mining in Arkansas is complex and fascinating. Through much of the 20th century, the land that makes up today's diamond search area was divided. It was bought, sold, and leased numerous times. Local farmer . . . Map (db m274583) HM
76 Arkansas, Pike County, Murfreesboro — An Attempt at RichesThe Martin Processing Plant
In 1948, Glen L. Martin leased property to build a diamond processing plant. Martin's plant operation lasted only eight months after recovering less than 250 carats of diamonds. The original location of the Martin Plant has been preserved. Its . . . Map (db m274185) HM
77 Arkansas, Pike County, Murfreesboro — End of a Mystery: What is Below the Surface?
Ever since John Huddleston discovered the first diamonds here in 1906, people have wondered what lies under the volcanic soil in Southwest Arkansas. How deep and how large is this diamond deposit? From 1990 to 1997, Arkansas State Parks . . . Map (db m274572) HM
78 Arkansas, Pike County, Murfreesboro — B-26 — Pike County Diamond Mines
Two and a half miles southeast of this point is the only locality in North America where diamonds have been found in the rock in which they were formed. They have been found principally in one igneous pipe which, with three small pipes, aggregates . . . Map (db m121290) HM
79 Arkansas, Pulaski County, Jacksonville — The Memphis to Little Rock RailroadSamson Gray Helps Link the State Capital with the Mississippi
One of the largest public works projects to take place in territorial Arkansas was construction of the Memphis to Little Rock Road, an ambitious effort to allow travelers to cross the dense swamps and Grand Prairie of east Arkansas to reach the . . . Map (db m116571) HM
80 Arkansas, Pulaski County, Little Rock — One Old RockLa Petite Roche Historical Walk
La Petite Roche ("the Little Rock") refers to the rock outcropping on the Arkansas River used as a navigation point during the early exploration of what would become the state of Arkansas. Sometimes called the Point of Rocks, it is the first . . . Map (db m116556) HM
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81 Arkansas, Pulaski County, Little Rock — Smaller Rock, Big BridgeLa Petite Roche Historical Walk
Post-Civil War, railroads became vital to the Arkansas economy. Point of Rocks was a natural support for a railroad bridge on the river. In October 1872, construction began at the Little Rock with several tons of rock removed from the . . . Map (db m116541) HM
82 Arkansas, Pulaski County, Little Rock — The Big Rock and the Little RockLa Petite Roche Historical Walk
Jean-Baptiste Bénard de La Harpe was the first European explorer to record the existence of a large rocky bluff on the north bank of the Arkansas River. According to his journal, La Harpe named it le Rocher Français ("the French Rock") on . . . Map (db m116558) HM
83 Arkansas, Pulaski County, Little Rock — Witness to RemovalLa Petite Roche Historical Walk
In 1818, the U.S. policy on Indian Removal restricted the Quapaw to a reservation in Arkansas. The western boundary, or Quapaw Line, began at "the Little Rock." This was perhaps the first official use of the name Little Rock. In 1824, a new . . . Map (db m116565) HM
84 Arkansas, Searcy County, Marshall — Devils Backbone Road Cut-Geology / Construction
Devils Backbone Road Cut-Geology This road cut exposes the upper Fayetteville Shale, and overlying lower Pitkin Limestone deposited in a shallow sea covering the southern Ozark region as the Mississippian Geological Period ended. As . . . Map (db m143764) HM
85 California, Alameda County, Berkeley, Berkeley Hills — Indian RockBerkeley History
Outcroppings of weathered rock are a prominent feature of the Berkeley Hills, providing evidence of this area’s complex geological past. Composed of Northbrae rhyolite, Indian Rock is an ancient volcanic remnant. Native Ohlone communities gathered . . . Map (db m53852) HM
86 California, Alameda County, Berkeley, Berkeley Hills — Thousand Oaks Neighborhood and UrnsCirca 1909-1910 — Mark Daniels, Landscape Engineer —
Berkeley History In the early 1900s, the natural beauty of this undeveloped district, with dramatic rock outcroppings and ancient oaks made it a favorite destination for picnickers and hikers. After a campaign to make the area a city park . . . Map (db m53848) HM
87 California, Alameda County, Berkeley, North Berkeley — Live Oak Park1914 — Berkeley History — Reported permanently removed
Live Oak Park was created in 1914 when the City of Berkeley purchased four acres from landowners R.S. Penniman and Michael O’Toole. Mr. Penniman’s brown shingle house served as the park clubhouse and also, from 1916-1936, as Berkeley’s North Branch . . . Map (db m194669) HM
88 California, Alameda County, Fremont, Cameron Hills — Under the Canopy
Amphibians such as the native Pacific Tree Frog rely on shade and habitat created by oaks, buckeyes, willows, and other riparian trees that grow near the creek. Tree frogs eat insects and spiders as large as they are. The toe pads of these . . . Map (db m212648) HM
89 California, Alameda County, Piedmont — Sulphur Springs GrottoThe Healing Powers of Mineral Springs
The first recorded visitor to the sulphur springs grotto is Isaac Holmes, a retired U.S. Senator from South Carolina, who reportedly installed a bathtub in Bushy Dell canyon in the early 1860s in order to take alfresco baths for his rheumatism. . . . Map (db m72378) HM
90 California, Alpine County, Kirkwood — Caples Lake
In 1849 Dr. James Caples passed through here on his way to California’s gold country. After a brief stay in Old Hangtown (Placerville) Caples remembered the lake and returned here with his family to establish a way station that served weary . . . Map (db m11048) HM
91 California, Alpine County, Kirkwood — Summer Retreat
In 1849 Mary Jane Walker Caples, along with her brother, husband James, and baby daughter Isabella, traveled overland by wagon to the gold fields of California. The Caples went to “Hangtown,” (Placerville,CA) to seek their fortune. James . . . Map (db m44987) HM
92 California, Alpine County, Markleeville — Grover Hot Springs
Telltale signs of geologic activity surround Grover Hot Springs State Park. Bold granite peaks to the northwest are the work of immense mountain building forces. Old lava flows cover hundreds of square miles to the east, giving the Markleeville area . . . Map (db m13239) HM
93 California, Amador County, Volcano — Volcano Masonic Cave
In Memory of the Bryant Brothers Clemens E. Bryant, Thomas L. Bryant, Roy Bryant and Walter F. Bryant Whose surviving relatives deeded this property to Volcano Lodge No. 56 F. & A. M. on June 20, 1962. Our pioneer . . . Map (db m15824) HM
94 California, Butte County, Oroville — Bald Rock Dome
Bald Rock Dome was formed from a large body of melted rocks (called the Bald Rock Pluton) deep in the earth's crust. The Bald Rock Pluton is two miles wide, and was formed approximately 140 million years ago. As the pluton cooled, parts of its . . . Map (db m146208) HM
95 California, Calaveras County, Angels Camp — Stalactite/Stalagmite
This natural formation came from a cavern on the property of the Calaveras Cement Co., located near Calaveritas in Calaveras County. It was donated to the museum by the Flintkote Co. in 1957. Collectively known as speleothems, these ancient . . . Map (db m101618) HM
96 California, Calaveras County, Cave City — 956 — California Caverns at Cave City — California Historical Landmark No. 956 —
California Cavern at Cave City, Historical Landmark No. 956.Map (db m241571) HM
97 California, Calaveras County, Murphys — Mercer Caverns
Discovered September 1, 1885, by Walter J. Mercer. Resting at this site and noticing movement of grass near a small hole. Enlarging the opening, he ascended into extensive caverns containing varieties of fantastic crystalline formations. The public . . . Map (db m16017) HM
98 California, Contra Costa County, Clayton — History of Marsh Creek Springs
Founded in 1927 by Gerald (Jerry) Gill and family, the park consisted of four picnic sections, over forty acres, four baseball diamonds, two swimming pools, a wading pool for children, large dance hall and two snack bars. At one time the grounds . . . Map (db m94663) HM
99 California, Contra Costa County, Clayton — Old Marsh Creek Springs
This area in the mid 1850s, was a known hideout for legendary bandit Joaquin Murrieta, who worked as a vaquero for John Marsh on his rancho just east of here. It was also frequented by John "Grizzly" Adams, famed California mountain man. In 1927 . . . Map (db m94657) HM
100 California, Contra Costa County, El Cerrito — Cerrito Creek Reported unreadable
. . . Map (db m94104) HM

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Jun. 4, 2026