Glacial Lake Missoula surely became a splendid and brilliant greenish blue as the last of the summer rock flour settled and the larch trees blazed yellow in the deepening chill of the coming winter.

In this excerpt from David Alt's book, Glacier Lake Missoula and Its Humongous Floods, find out what Glacial Lake Missoula might have been like 15,000 years ago, including its size, color, flora ...

Nearly 14,000 years after breaking free and rushing headlong into the Pacific Ocean, Glacial Lake Missoula continues to influence life in its namesake valley – and beyond.

Glacial Lake Missoula doesn’t show him how the aquifer works, but it demonstrates how variable the climate was 15,000 years ago. Every bit of the landscape in the Missoula Valley was shaped by ...

LAKE COMO – It’s hard to imagine now. A huge lake formed behind a 2,000-foot-high, 35-mile-wide ice dam that blocked the Clark Fork River near the Montana and Idaho border. Glacial Lake ...

THOMPSON FALLS, Mont. — Once home to an ancient ice dam holding back Glacial Lake Missoula, a scenic stretch of highway is now dotted with historic bridges and modern-day dams. In this Road ...

Glacial Lake Missoula formed behind a miles-long dam of ice across what is now the valley of the Clark Fork and Pend Oreille rivers running from Montana to northeast Washington.

Take a long drive through Montana's Big Sky Country on a road trip that will guide you from town to town and through the ...

Nearly 14,000 years after breaking free and rushing headlong into the Pacific Ocean, Glacial Lake Missoula continues to influence life in its namesake valley – and beyond.