• Dave Harmon, PW editor

Study: Devils Postpile NMon provides one of many examples of climate change refugia

For more than a century, the famous formation of long, symmetric columns of basalt have drawn tourists to marvel at the geology of Devils Postpile National Monument near Mammoth Lakes, California.

But recently scientists have found another interesting natural feature in the park. A valley with high walls and a north-south alignment blocks sunlight and traps cold air, creating cool temperatures that, they believe, may become a kind of refuge for plants and animals facing a warming world.

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