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historicalmarkerproject/markers/HMUI3_fountain-paint-pot_Yellowstone-National-Park-WY.html
Making Mud
This vat of bubbling mud contains the perfect mix of ingredients to create mudpots: heat, gases, rock, minerals, acid, and even living microorganisms!
Heat-loving "thermophiles" consume some of the gases and help convert them into…
historicalmarkerproject/markers/HMUHU_the-norris-area_Yellowstone-National-Park-WY.html
Norris Geyser BasinYou are close to a world of heat and gases where microorganisms live in such massive numbers they add color to the landscape. This strange, beautiful place is on the edge of a giant volcano-the Yellowstone Volcano-one of the lar…
historicalmarkerproject/markers/HMUHQ_life-on-the-edge_Yellowstone-National-Park-WY.html
The billions of colorful microorganisms lining this hot spring's runoff channels are called "extremophiles" because they live in conditions that were once thought to be too extreme to host life. Extremophiles that live in hot springs are called "t…
historicalmarkerproject/markers/HMUHK_grand-prismatic-spring-prism-of-light-spectrum-of-life_Yellowstone-National-Park-WY.html
Grand Prismatic Spring is the largest and one of the most brilliant of Yellowstone's many colorful hot springs. It massive expanse stretches approximately 200 feet (61m) across. The high temperature of its water—?160 (70?C)—ensures tha…
historicalmarkerproject/markers/HMUHH_buried-alive_Yellowstone-National-Park-WY.html
Excelsior Geyser's rugged crater was created by rare massive geyser eruptions. Surprisingly, it also preserves a record of past life.
For thousands of years, microbes have grown in the runoff channels extending from nearby Grand Prismatic Sprin…
historicalmarkerproject/markers/HMUHC_excelsior-geyser_Yellowstone-National-Park-WY.html
In the 1880s Excelsior Geyser erupted in bursts 50 to 300 feet high. The thermal violence formed the jagged crater and apparently ruptured the geyser's underground system, causing eruptions to cease after 1890.
On September 14, 1985, Excelsior …
historicalmarkerproject/markers/HMUH5_norris-geyser-basin_Yellowstone-National-Park-WY.html
Beautiful and Bizarre
As you walk through Norris Geyser Basin, you may feel as if you are encountering another world. In the basin—far below the towering peaks of the Gallatin Mountains—water accumulates underground. Heated by the Y…
historicalmarkerproject/markers/HMUH4_yellowstone-national-park_Yellowstone-National-Park-WY.html
Yellowstone has been designated a U.S. Biosphere Reserve, a World Heritage Site, and is one of the largest national parks in the lower 48 states. Its boundaries protect over 10,000 geysers,hot springs, mudpots, and steam vents-the earth's largest …
historicalmarkerproject/markers/HMUH3_the-national-park-system_Yellowstone-National-Park-WY.html
The national park idea is often referred to as one of America's greatest contributions to world culture. America's natural and cultural heritage—its very character and soul—is preserved in over 360 units of the National Park System.
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historicalmarkerproject/markers/HMUGX_shifting-ground_Yellowstone-National-Park-WY.html
Before the earthquake on June 30, 1975, the observation platform extended one hundred feet farther into the canyon. The main tremor and numerous aftershocks measuring 6.1 on the Richter scale shattered a portion of this cliff, tumbling it into the…