August 25, 2013

Crater Lake, Oregon

Photograph by Justin Bailie, Aurora

A hiker in Crater Lake National Park looks out over the park's deep blue namesake. Thanks to some of the cleanest air in the U.S., visitors can see more than a hundred miles from points along many of the park's 90 miles of trails. The lake itself is 21 square miles of water so intensely blue it looks like ink.

How does Crater Lake stay healthy? Learn about new water conservation measures in this month's National Geographic Traveler cover story, "The Traveler 50: People, Places, and Ideas Changing the Way We Travel" >>

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