California’s Eastern Sierra contains a wide variety of geothermal springs and Wild Willy’s is definitely one of my favorites.

Leave No Trace

Leave No Trace

Also known as "Crowley Hot Springs", Wild Willey's is just a short drive south short from Mammoth Lakes.

Also known as “Crowley Hot Springs”, Wild Willey’s is just a short drive south from Mammoth Lakes.

The pools are reached by following the path and boardwalk from the parking area.

The pools are reached by following the path/boardwalk from the parking area.

Remain on the boardwalk in order to preserve the fragile desert plain ecosystem.

Remain on the boardwalk in order to preserve the fragile desert plain ecosystem.

There are two different hot spring pools to choose from. The more popular larger pool is deeper and comfortably fits more people, while the smaller circular pool is slightly warmer, a little shallower, and pretty much gets maxed out with 1-3 people in it.

There are two different hot spring pools to choose from. The more popular larger pool is deeper and comfortably fits more people, while the smaller circular pool is slightly warmer, a little shallower, and pretty much gets maxed out with 1-3 people in it.

Long Valley, where the hot springs are located, is home to one of California’s highest concentrations of geothermal surface water.

Long Valley, where the hot springs are located, is home to one of California’s highest concentrations of geothermal surface water.

The water temperature in both pools ranges between 95 and 105 degrees.

The water temperature in both pools ranges between 95 and 105 degrees.

Unlike other hot springs in the area, these pools had only a slight aroma of the rotten egg smell that is usually associated with sulphur rich springs. If you go, please be respectful and practice the Leave No Trace principles.

Unlike other hot springs in the area, these pools had only a slight aroma of the rotten egg smell that is usually associated with sulphur rich springs. If you go, please be respectful and practice the Leave No Trace principles.