The US Army tried to capture the Nez Perce here on August 9th and 10th 1877 as they were fleeing to Canada. You can walk up the hill to where the US Army shelled the encampment with a mountain Howitzer (one of the originals was in the visitor’s center), which the Nez Perce eventually captured, but were unable to use because the man with the firing pins ran away.

http://www.nps.gov/biho/