Glacier Reborn

RED LODGE POST

A window to Pleistocene history Glacier National Park, Montana, c 12000 years ago.

Glacier Park
McDonald Valley, Glacier National Park. Photo captured from GNP Web cam on Apgar Mountain.

A massive alpine glacier fills McDonald Valley, Glacier National Park, Montana. Photo from a GNP Web cam at Apgar Mountain, September 28, 2020, 7:30 a.m.

 

Glacier Park
Lake McDonald, Glacier National Park. Photo captured from GNP Web cam on Apgar Mountain.

Beautiful glacial Lake McDonald in McDonald Valley, Glacier National Park, as it appeared on September 9, 2020, 1:13 p.m. Photo from a GNP Web cam at Apgar Mountain.

Mystery unraveled:

In the first photo, nature revisits the geologic past. A giant cloud hovers over current Lake McDonald and the McDonald Valley, below the surrounding mountain peaks, simulating how the valley may have appeared c 12000 years ago when the valley was filled by an alpine glacier.

Glaciers are a cyclical phenomenon of the recent geologic past in North America. The present time is likely an inter-glacial period. This suggests that massive alpine glaciers will cover much of the northern Rocky Mountains in North America, including Glacier National Park, again in the future.

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