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historicalmarkerproject/markers/HM1NQY_giant-geyser_Yellowstone-National-Park-WY.html
When active, Giant Geyser is one of the largest in the world. Historic accounts describe Giant's eruptions soaring to heights of 250 to 300 feet. However, recent eruptions have ranged from 200 to 250 feet.Giant Geyser displays cycles of activity a…
historicalmarkerproject/markers/HM1NQT_living-on-the-edge_Yellowstone-National-Park-WY.html
At first glance, geyser basins may appear to be stark and lifeless places. Amazingly, they team with both microscopic and visible life year-round. Even the hottest thermal features contain tiny microbes that can live in one of earth's most extreme…
historicalmarkerproject/markers/HM1NQS_volcanic-landscape_Yellowstone-National-Park-WY.html
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…
historicalmarkerproject/markers/HM1NQN_leaping-the-rapids_Yellowstone-National-Park-WY.html
In June and July these rapids fill with cutthroat trout heading upstream to spawn near the lake outlet. Spawning is a life-and-death event; here at LeHardy Rapids you can witness the fierce energy it takes for the species to survive. Watch pools a…
historicalmarkerproject/markers/HM1NQ1_gibbon-falls_Yellowstone-National-Park-WY.html
Cascading to the CalderaThis frothy veil of water plunges 84 feet (26 m), then tumbles toward the Yellowstone Caldera about ¼ mile (.4 km) downriver. As Gibbon Falls erodes the rock below, the waterfall forever grows higher and migrates farther f…
historicalmarkerproject/markers/HM1NPU_life-at-the-blowdown_Yellowstone-National-Park-WY.html
A Flourishing ForestPeering into the forest today, you may see signs of ranging storms. Ravaged by wind and later by the Fires of '88, the forest here looked devastated. But lodgepole pines are well suited to Yellowstone's harsh climate and volcan…
historicalmarkerproject/markers/HM1NPT_steamboat-geyser_Yellowstone-National-Park-WY.html
When Steamboat Geyser erupts, it can rocket a column of scalding water 90-120 meters into the air - two to three times the average height of Old Faithful. Steam roars for twenty-four hours after. Odds are against your witnessing this drama, howeve…
historicalmarkerproject/markers/HM1NPH_towers-in-the-air_Yellowstone-National-Park-WY.html
Tower Fall is the story of two rocks: easily eroded rocks and rocks that are resistant to erosion. Rock at the brink and underlying the waterfall is a hard volcanic rock. Erosion at the base of the fall causes the upstream migration of the fall.Lo…
historicalmarkerproject/markers/HM1NPF_soda-butte_Yellowstone-National-Park-WY.html
This travertine (calcium carbonate) mound was formed more than a century ago by a hot spring. Only small amounts of hydrothermal water and hydrogen sulfide gas currently flow from this once more prolific spring. This formation is very fragile. It …
historicalmarkerproject/markers/HM1NL1_chittenden-memorial-bridge_Yellowstone-National-Park-WY.html
General Hiram Martin ChittendenCorps of Engineers United States Army1858 - 1917