National Geographic : 1937 Mar
CRATER LAKE AND YOSEMITE THROUGH THE AGES ALL THAT NOW REMAINS OF THE MAJESTIC MOUNTAIN Relentless forces leveled the towering peak. The top of Mount Mazama disappeared by explosion or gradual sinking, leaving a giant caldera six miles across and four thousand feet deep. Rains and snows have filled this huge depression with the waters of Crater Lake. INCREDIBLY BLUE, CRATER LAKE SPARKLES IN ITS ROCKY SETTING Sheer walls rise in some places 2,000 feet above the water. Graceful hemlocks, clinging to the rim, soften its sharpness with feathery foliage. Clouds that drift above the water send shadows racing across the mirrorlike surface.