Yam Pah Pa

Yam Pah Pa is a recorded name of the Snake River, which winds from the Rocky Mountains across the northern interior to the Columbia. Below the broad plain, the river enters deep canyons as tributaries join it from either side. In 1811 Wilson Price Hunt's overland fur-trading expedition followed the Snake westward, but dangerous rapids brought its canoe journey to an end. The divided party continued along the river and eventually crossed near the mouth of the Weiser before turning toward the Columbia.