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Liberty Bell Mountain was carved out by erosion. Once upon a time people believed it had always been exactly like this. But even in our lifetimes the trees around it have changed.

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Tease photo

What’s the next big scientific proposal?

We will have to temper reactions when it arrives

In 1995 David Alt and Donald Hyndman published a book called “Northwest Exposures.” A fat (442 pages) book, it was a physical and historical geologic history of the Northwest states, including scraps of Montana and California and, once, I think, a piece of Utah along with Washington, Idaho and part of British Columbia.

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