Yellowstone National Park in Park County, Wyoming — The American West (Mountains)
The high cliffs around you were created after the last volcanic eruption in the Yellowstone region, about 630,000 years ago. The powerful eruption ejected ash as far away as Nebraska and Texas, expelling magma from an underground chamber more than 30 miles in diameter. As the roof of the chamber collapsed, a caldera or crater, was formed spanning nearly half of Yellowstone National Park. In time, massive lava flows, filled the caldera, creating the present landscape including the cliffs before you.
The evidence of Yellowstone’s volcanic events are all around you. The heat from magma still beneath the surface powers the park’s geysers, hot springs, fumaroles (steam vents), and mud pots.
Erected by Yellowstone National Park.
Location. 44° 27.723′ N, 110° 51.287′ W. Marker is in Yellowstone National Park, Wyoming, in Park County. Marker is on Lower Grand Loop Road, on the right when traveling south. Touch for map. Marker is located in the Black Sand Basin in Yellowstone National Park. Marker is in this post office area: Yellowstone National Park WY 82190, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Black Sand Basin (about 300 feet away, measured in a direct line); Living on the Edge Daisy Geyser (approx. ¾ mile away); Castle Geyser (approx. 0.9 miles away); Beauty and Chromatic Pools (approx. 0.9 miles away); Giant Geyser (approx. 0.9 miles away); Grand Geyser (approx. 0.9 miles away); Crested Pool (approx. 0.9 miles away). Touch for a list and map of all markers in Yellowstone National Park.
More about this marker. The background of the marker contains a photograph of the Rhyolite Cliff Face seen from the marker. A map of Yellowstone National Park on the right side of the marker shows the location of the Yellowstone Caldera and indicates Rhyolite Lava Flows and Geothermal areas.
Categories. • Natural Features •
Credits. This page was last revised on June 16, 2016. This page originally submitted on September 8, 2015, by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 142 times since then and 10 times this year. Photos: 1, 2, 3. submitted on September 8, 2015, by Bill Coughlin of North Arlington, New Jersey.