Mammoth in Yellowstone National Park in Park County, Wyoming — The American West (Mountains)
Black Sand Basin
Photographed By Bill Coughlin, August 1, 2015
1. Black Sand Basin Marker
Black obsidian (volcanic glass) “sand” gives this geyser basin its name. Oranges, greens, and other colors in and around the hot springs come from thermophiles (heat-loving microorganisms). While you walk the trail, watch for one of Cliff Geyser’s frequent eruptions. The fully accessible trail is about ¼ mile (0.4 km) long.
Erected by National Park Service.
Topics. This historical marker is listed in this topic list: Natural Features.
Location. 44° 27.727′ N, 110° 51.213′ W. Marker is in Yellowstone National Park, Wyoming, in Park County. It is in Mammoth. Marker can be reached from Lower Grand Loop Road, on the right when traveling south. Touch for map. Marker is in this post office area: Yellowstone National Park WY 82190, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Volcanic Landscape (about 300 feet away, measured in a direct line); Living on the Edge (about 600 feet away); Daisy Geyser (approx. 0.7 miles away); Castle Geyser (approx. 0.8 miles away); Beauty and Chromatic Pools (approx. 0.8 miles away); Crested Pool (approx. 0.9 miles away); Grand Geyser (approx. 0.9 miles away); Giant Geyser (approx. 0.9 miles away). Touch for a list and map of all markers in Yellowstone National Park.
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Photographed By Bill Coughlin, August 1, 2015
2. Black Sand Basin Marker
Photographed By Bill Coughlin, August 1, 2015
3. Black Sand Basin
Photographed By Bill Coughlin, August 1, 2015
4. Emerald Pool
Photographed By Bill Coughlin, August 1, 2015
5. Cliff Geyser
Credits. This page was last revised on February 16, 2023. It was originally submitted on September 22, 2015, by Bill Coughlin of Woodland Park, New Jersey. This page has been viewed 282 times since then and 14 times this year. Photos: 1, 2, 3, 4, 5. submitted on September 22, 2015, by Bill Coughlin of Woodland Park, New Jersey.
