El sótano de las golondrinas, San Luis Potosí, México

Devil's Tower, WY

Rock formation in Moab, Grand Canyon, Utah

Upper Antelope Canyon, Arizona

Winter in Shirakawa-go, Japan

Mgarr ix-Xini,Gozo,Malta

Landmannalaugur, Iceland. Beautiful rhyolite hills.

Lower Lewis River Falls, Washington

El Matador Beach, California

Engelberg

North Stradbroke Island, Australia -

A desert in the middle of Iran. Photo by Arash Karimi

Sala, Sweden at 2am