J Harlen Bretz and the Ice Age Floods: New Discoveries
56:24
Ice Age Geologists look for Glacial Till near Spokane
1:10:57
What Happened to the Spokane Ice Sheet?
1:05:22
Bridge of the Gods Landslide
1:12:36
Joseph Pardee Discoveries w/ Glenn Cruickshank
1:39:23
Nick Zentner - J Harlen Bretz and the Ice Age Floods: New Discoveries
1:19:50
The Bonneville Flood: Why, How, and Its Spectacular Effects on the Landscape
1:18:44
Bretz's Spokane Flood & The Missoula Floods
1:35:01