A view of Banks Lake and Steamboat Rock from the top of Rock feature in Northrup Canyon. Grand Coulee, Northrup Canyon and Steamboat Rock were all carved by flooding 15,000-18,000 years ago.
A view of Banks Lake and Steamboat Rock from the top of Rock feature in Northrup Canyon. Grand Coulee, Northrup Canyon and Steamboat Rock were all carved by flooding 15,000-18,000 years ago. File McClatchy
A view of Banks Lake and Steamboat Rock from the top of Rock feature in Northrup Canyon. Grand Coulee, Northrup Canyon and Steamboat Rock were all carved by flooding 15,000-18,000 years ago. File McClatchy

Were the Ice Age floods the largest ever? Researcher to speak in Richland

November 08, 2018 04:42 PM