West Thumb Geyser Basin Trail - Yellowstone National Park WY
Posted by: 
kJfishman
N 44° 25.051 W 110° 34.240
12T E 534179 N 4918336
West Thumb Geyser Basin Trail on the edge of Yellowstone Lake.
Waymark Code: WMPVYM
Location: Wyoming, United States
Date Posted: 10/27/2015
Views: 21
The West Thumb Geyser Basin Trail on the edge of Yellowstone Lake.
"The boardwalk passes Lakeshore Geyser, which also spends part of the year operating below the surface. When exposed, the geyser can spout water a few feet high. Further offshore, there are more hot springs and hydrothermal vents along the bottom of the West Thumb. A sign along the trail explains how the West Thumb of Yellowstone Lake was created:
West Thumb’s shoreline has suspiciously crater-like contours. Its underwater profile is dramatically deeper than the rest of Yellowstone Lake. Only a massive explosion could have formed West Thumb. … This bay is a crater within a crater—a volcanic eruption and violent collapse within the larger, earlier, Yellowstone caldera.
"West Thumb Geyser Basin stands out because it is on the edge of, and partially submerged by, Yellowstone Lake, which creates a dramatic backdrop for the dynamic geysers, pools, and springs. A dirt trail and wooden boardwalk loops through the geyser basin, offering a 2/3 of a mile long wheelchair-friendly stroll." (
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