I learned about the floods at Dry Falls, in central Washington, where you can look out the window of the little visitor center and see the cliff formed by the l

I learned about the floods at Dry Falls, in central Washington, where you can look out the window of the little visitor center and see the cliff formed by the largest waterfall known to have existed in all of Earth's history. It was an amazing sight, and the whole landscape I had been driving through all day suddenly popped together in a new way. I've been back through the scablands many times since, both hiking and driving, and it's amazing how you can just see the shape of those ancient water flows on the land once you know what to look for.