Ice Age Floods National Geologic Trail

At the end of the last Ice Age, 18,000 to 15,000 years ago, an ice dam in northern Idaho created Glacial Lake Missoula stretching 3,000 square miles around Missoula, Montana. The dam burst and released flood waters across Washington, down the Columbia River into Oregon before reaching the Pacific Ocean. The Ice Age Floods forever changed the lives and landscape of the Pacific Northwest.

Green Monarch Ridge

Green Monarch Ridge by Lake Pend Oreille ID

Green Monarch Ridge by Lake Pend Oreille ID

Steamboat Rock

Steamboat Rock State Park, Washington

Large butte with lake in the foreground

Banks Lake

Banks Lake view from Steamboat Rock

Steamboat rock in the foreground with Banks Lake in the distance

Dry Lakes

Dry Lake lake bed and falls in winter

Dry Lake lake bed and falls blanked with snow.

Dry Falls

A beautiful shot from the ledge near the visitor's center in the Dry Falls area.

A overhead shot of the Dry Falls area