Shoshone Ice Caves, Ice cave in Lincoln County, United States.

Shoshone Ice Caves are lava tubes in the Black Butte Crater Lava Field, about 30 km north of Shoshone, Idaho. The largest cave lies roughly 30 m below the surface, is about 500 m long, 15 m wide and 14 m high, with a floor of ice 2.5 to 9 m thick. Its temperature stays between −5 and +0.5 °C year-round.

The caves formed from ancient lava flows that created tube-like passages where water later froze due to cold air circulation. This geological development created a natural phenomenon that has survived to the present day.

The attached museum displays artifacts related to the Shoshone people and their connection to this location. These collections show how important this cave has been to the local community.

Visiting requires climbing stairs to descend into the passages and moving through the underground spaces. It is wise to bring warm clothing even if temperatures are warm above ground since the environment underground remains perpetually cold.

While temperatures outside vary greatly the interior remains frozen year-round and functions like a natural cooling system. This ability stems from the volcanic structure that helps trap cold air within the underground spaces.