Palouse Falls State Park is 17 mi. s.e. on SR 260/261, then 2.5 mi. e. on a gravel road, following signs. In sharp contrast with the arid surroundings, massive amounts of water plummet nearly 200 feet into a deep pool at Palouse Falls, the centerpiece of this 105-acre state park. The flow peaks in spring and early summer. Layers of basalt lavas typical of the region have been exposed in the canyon below the falls.