description Abyss Pool Overview
Abyss Pool is a hot spring in the West Thumb Geyser Basin of Yellowstone National Park, on the shore of Yellowstone Lake. It is known for its unusual depth and dark blue water, which reflect the clear geothermal pool and surrounding volcanic setting. Visitors view it from the West Thumb boardwalk; it is a thermal spring rather than a geyser that regularly ejects water.
help Abyss Pool FAQ
Where is Abyss Pool located?
Abyss Pool is a hot spring in Yellowstone National Park's West Thumb Geyser Basin on the shore of Yellowstone Lake. The National Park Service describes it as one of the park's deepest hot springs. [National Park Service](https://www.nps.gov/places/000/abyss-pool.htm)
How deep is Abyss Pool?
Abyss Pool descends about 53 feet, or 16 meters. Its dark blue appearance comes from the depth and clarity of the hot spring, but the water is hazardous and not suitable for swimming.
Is Abyss Pool a geyser that erupts like Old Faithful?
No. Abyss Pool is a hot spring rather than a regularly erupting geyser. Its position in the West Thumb hydrothermal basin makes it part of Yellowstone's volcanic system, but visitors should not expect a timed eruption.
Why does Abyss Pool look so dark blue?
The pool's depth and exceptionally clear water absorb and scatter light in ways that produce a deep blue appearance. The color is a visual effect of the water and basin, not evidence that the pool is safe or cool.
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