West Thumb Geyser Basin in Yellowstone National Park

One of the smallest and quietest basins, mostly hot springs and pools. There is a walkway throughout the area so it is a good place to see these features close up.


View Medium or Large image. 		Mud pot
This one is right at the entrance to the parking lot
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Surging Spring
At the high point of the cycle, the water is overflowing a little. You can see a little boiling in the water.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Collapsing Pool (edge)
The ledge of rock on the side of this pool has partialy collapsed, giving it its name.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Ephedra Spring
Greenish-yellow on the edge and greenish-blue in the center. This is a small pool that isn't overflowing.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Blue Funnel Spring
A quiet blue pool in the middle of the basin.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		West Thumb Geyser Basin walkway

Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Black Pool
Named black pool, but it is blue and giving off a good amount of steam. People look at it from the boardwalk on the left.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Outflow from Black Pool
Where is the flow is the strongest and hottest it is bright orange. It goes into Lake Yellowstone.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Percolating Spring
This spring bubbles along all day. It is shallow and clear so the white ground shows through. Along the edge is a ring of yellow and orange bacteria.
Date: July 17, 2019
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Seismograph Pool

Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY

View Medium or Large image. 		Seismograph Pool
It quickly gets very deep.
Date: August 23, 2010
Location: West Thumb Geyser Basin, Yellowstone National Park, WY