Ice Age cataclysms violently transformed the Northwest thousands of years ago, leaving behind scores of flood features, many found nowhere else on Earth. The sheer enormity of the Ice Age floods is mind-boggling. The floods helped gouge out Idaho?s largest and deepest lake, Pend Oreille, and sculpted the weird topography of eastern Washington. Following up on his first volume, On the Trail of the Ice Age Floods: A geological field guide to the Mid-Columbia...