"Crater Lake is evidence of the tectonic activity that's eternally shaping the planet. A long-ago eruption formed a giant caldera, which filled with rain and snow over time. The gradual result is a deep lake (the deepest in the country, in fact) with intense blue waters and fantastic clarity. Crater Lake's mountain setting atop the Cascade Range makes it even more hypnotic." - Anne Olivia Bauso Anne Olivia Bauso Anne Olivia Bauso is a travel writer and hotel expert based in New York City. She has written hundreds of hotel reviews, from 5-star Ritz-Carlton properties to treehouse eco-resorts in the