Aerial of the Taiga around Tura, Krasnoyarsk Krai, Evenki state, Russia

El Castillo, Tulum Archeological Site, Quintana Roo State, Mexico

Structure II, Calakmul Archaeological Site, Campeche State, Mexico

A warning sign stating that the road can be closed seasonally, Coconino National Forest, Arizona, United States of America

Extremely dirty waste area in the Fadar Daurama Emir's palace, Daura Emirate, Katsina state, Nigeria

Popocatepetl Volcano seen from Cholula, Puebla State, Mexico

Close to entrance to Jenny's Canyon, Snow Canyon State Park, near St. George, Utah, United States of America

Stokla pass (4900), Hemis National Park, Ladakh region, state of Jammu and Kashmir, India, Asia

Mud brick production at Al Hajjaryn, Wadi Doan, Yemen

Khaylla, Khaylah village, Wadi Doan, Wadi Hadramaut, Yemen

Mud brick production at Al Hajjaryn, Wadi Doan, Yemen

Mud brick production at Al Hajjaryn, Wadi Doan, Yemen

Khaylla, Khaylah village, Wadi Doan, Wadi Hadramaut, Yemen

Aerial view of Mokuho’oniki Islet and Kanaha Rock near the island of Molokai, Maui County, Hawaii, United States of America

Detail of flowing lava, Hawaii Volcanoes National Park, Hawaii, USA, Hawaii Volcanoes National Park, Hawaii, USA

Black Rock Desert in Nevada. Arid cracked crusty surface of the salt flat playa. Wheatgrass plants with a dense network of roots in shallow soil with bright fresh green leaves and stalks.

Black Rock Desert in Nevada. Arid cracked crusty surface of the salt flat playa. Wheatgrass plants with a dense network of roots in shallow soil with bright fresh green leaves and stalks.

An aerial view of the islands of the Great Barrier Reef in Queensland, Australia, Great Barrier Reef, Queensland, Australia

Thick-billed Murres, Brunnich's Guillemots, nesting on a steep cliff site, near Svalbard in Norway, Svalbard, Norway

Thick-billed Murres, Brunnich's Guillemots, nesting on a steep cliff site, near Svalbard in Norway, Svalbard, Norway

People walking through the lava fields and up a volcano slope of the Craters of the Moon National Monument.

A pair of mute swans in Lake Kawaguchi disrupt the reflection of Mt. Fuji, Japan, Lake Kawaguchi, Mount Fuji, Japan

A boardwalk extending across Midway Geyser in Yellowstone National Park, Cle Elum County, Washington, USA

The coastline and a horseshoe bay with waves crashing against the rocks in Julia Pfeiffer Burns State Park, Julia Pfeiffer Burns State Park, California, USA

Stormy clouds over cracked earth, USA, Oregon