The Fossil Falls is a unique geological feature, located in the Coso Range in Inyo County, California in the United States.

Volcanic activity in the mountain range, along with meltwater from glaciers in the nearby Sierra Nevada, played a role in the creation of the falls.

The Coso Volcanic Field brought flows from the northeast and later Red Hill, which can be viewed from Fossil Falls, released the younger lava.

The erosion found at Fossil Falls was formed by the youngest glacial runoff, called the Tioga, from the Sierra Nevada Mountain Range about 20,000 to 10,000 years ago.

[3][5] Bands of Native Americans, such as the Coso People, lived in the region as early as ten to twenty thousand years ago, camping along the now dry river.

The way of life that these people practiced survived until the 19th century, when the native tribe called the Little Lake Shoshone first made contact with Europeans.