The earliest evidence of humans in Idaho date nearly 16,000 years before present near
Cottonwood. According to Nimiipuu stories, humans first emerged from the Heart of the Monster (pictured, left) near present-day Kamiah.
The Nez Perce likely acquired horses in the 1700s, quickly mastering riding and breeding the Appaloosa horse.
The first European Americans that many Nimiipuu met were Lewis and Clark in 1805. The Nimiipuu built them dugout canoes on the Clearwater to complete their journey to the Pacific.
In 1855, the Nez Perce signed a treaty with the US government in Walla Walla, ceding their western homelands to the federal government and establishing a reservation in north-central Idaho, southeast Washington and northeast Oregon. This treaty guaranteed permanent hunting, fishing, and gathering rights.