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“Bite-Size Bits of Local, National, and Global History”
Near Wall in Pennington County, South Dakota — The American Midwest (Upper Plains)
 

Born of Volcanos

 
 
Born of Volcanos Marker image. Click for full size.
Photographed By Keith L, September 22, 2006
1. Born of Volcanos Marker
Inscription.  Thirty-seven million years ago, the ancient crystalline core of the Black Hills had already been exposed by erosion. The long blue profile of those mountains, visible to the west, looked much as it does now.

About that time, streams flowing from the west began to deposit sediments in this area. Most of the sediment was wind blown volcanic ash which had settled into the watershed which fed the streams. Occasionally the rivers brought gravel and stream-worn rocks from the Black Hills themselves. The ash weathered into clay, and turned into rock.

Erosion did not begin to gully the Badlands layers and foretell the present landscape until quite recently, perhaps only half a million years ago.
 
Topics. This historical marker is listed in this topic list: Natural Features.
 
Location. 43° 52.157′ N, 102° 14.092′ W. Marker is near Wall, South Dakota, in Pennington County. Marker can be reached from Badlands Loop Road (State Highway 240) 0.4 miles east of Sage Creek Rim Road, on the right when traveling east. Marker is in Badlands National Park
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(fee to enter) at Pinnacles Overlook. Touch for map. Marker is in this post office area: Wall SD 57790, United States of America. Touch for directions.
 
Other nearby markers. At least 8 other markers are within 17 miles of this marker, measured as the crow flies. The Big Badlands (about 400 feet away, measured in a direct line); Jungle on a Seabed (approx. 2.7 miles away); Homesteads and Ranches (approx. 4.4 miles away); High Security (approx. 5.7 miles away); Journey to Wounded Knee (approx. 7˝ miles away); The Carrol McDonald Post No. 246 (approx. 8.6 miles away); Purple Heart Memorial Highway (approx. 16.8 miles away); Cheyenne River Rest Area (approx. 16.8 miles away). Touch for a list and map of all markers in Wall.
 
More about this marker. Marker is on the edge of a cliff at the end of a walking path.
 
Additional keywords. Badlands National Park
 
Marker at Pinnacles Overlook image. Click for full size.
Photographed By Keith L, September 22, 2006
2. Marker at Pinnacles Overlook
Walking Path to Marker image. Click for full size.
Photographed By Keith L, September 22, 2006
3. Walking Path to Marker
View from Overlook image. Click for full size.
Photographed By Keith L, September 22, 2006
4. View from Overlook
View from Overlook image. Click for full size.
Photographed By Keith L, September 22, 2006
5. View from Overlook
Another view image. Click for full size.
Photographed By Michael Stroud, June 1992
6. Another view
From roadside stop in 1992
A 1965 view from roadside stop image. Click for full size.
Photographed By Michael Stroud, July 1965
7. A 1965 view from roadside stop
A Brownie Hawkeye camera day
Another Scenic Vista image. Click for full size.
Photographed By R. Zebley, circa 2002
8. Another Scenic Vista
 
 
Credits. This page was last revised on September 2, 2020. It was originally submitted on December 28, 2007, by Keith L of Wisconsin Rapids, Wisconsin. This page has been viewed 1,638 times since then and 10 times this year. Photos:   1, 2, 3, 4, 5. submitted on December 28, 2007, by Keith L of Wisconsin Rapids, Wisconsin.   6, 7. submitted on January 6, 2008, by Mike Stroud of Bluffton, South Carolina.   8. submitted on May 31, 2009, by R. Zebley of Rapid City, South Dakota. • Craig Swain was the editor who published this page.

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Feb. 20, 2024