"Banks Lake" by NPS/Dubar , public domain

Ice Age Floods

Palouse Falls (East-Central WA)

brochure Ice Age Floods - Palouse Falls (East-Central WA)

Brochure of Palouse Falls (East-Central WA) part of Ice Age Floods National Geologic Trail (NGT) in Washington, Oregon, Idaho and Montana. Published by the Ice Age Floods Institute

source

iafi.org

also available

National Parks
USFS NW