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Credit: Klaus Thymann / Project Pressure
Blue Lake (below), in New Zealand's South Island, is the clearest lake in the world. It is fed by water from Lake Constance, above. Both are found just next to Mount Franklin, in the Tasman District's Nelson Lakes National Park. Photographer Klaus Thymann took these photos during a February trip to Blue Lake on New Zealand's South Island, after getting approval from the government and the native Maori people, who consider the lake a sacred site.