"Banks Lake" by NPS/Dubar , public domain

Ice Age Floods

Ellensburg (South-Central WA)

brochure Ice Age Floods - Ellensburg (South-Central WA)

Brochure of Ellensburg (South-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