The Shoshone were an Indian people who lived from Death Valley, CA, northeastward through Nevada, southern Idaho, southwestern Montana, and western Wyoming and Utah. Sacagawea, the woman who served as a guide to the Lewis and Clark Expedition, was a Shoshone who met her relatives in Montana. The people date back to about 8,000 B.C. In summer, families would scatter in search of sparse food. In fall and winter, the families would regroup for festivals and rabbit hunts. There were no formal chiefs. Skilled individuals led such functions as festivities, hunting, and war.