Arches National Park, UT

Seventy Islands, Palau

Iliamna Volcano, Alaska. Photo by Michael Melford

Grand Teton National Park, Wyoming

Reed Flute Cave, China

Milfred Sound, New Zealand

A small stream near Arrowtown, New Zealand

Lake Coleridge, New Zealand

Mesa Arch, Canyonlands National Park

Valley of Unicorns, Kyrgyzstan

Spa Pool Karijini National Park, Australia

Fanning Island, Kiribati

Kings Canyon National Park, California