The Grandstand in Racetrack Valley, a dried lake bed known for its sliding rocks on the Racetrack Playa, Death Valley National Park, California, United States of America, North America

The Grandstand in Racetrack Valley, a dried lake bed known for its sliding rocks on the Racetrack Playa, Death Valley National Park, California, United States of America, North America

The Grandstand in Racetrack Valley, a dried lake bed known for its sliding rocks on the Racetrack Playa, Death Valley National Park, California, United States of America, North America

Spring Canyon in Canyon De Chelly National Monument viewed from the Sliding House Overlook on the south rim, Arizona, United States of America, North America

A hidden natural arch near Sliding House Overlook on the south rim of Canyon De Chelly, Arizona, United States of America, North America

The Grandstand in Racetrack Valley, a dried lake bed known for its sliding rocks on the Racetrack Playa, Death Valley National Park, California, United States of America, North America

Part of the vast crater of 10023 ft Haleakala, the world's largest dormant volcano, seen from Sliding Sands trail, Maui, Hawaii, Hawaiian Islands, United States of America (U.S.A.), North America

Sliding rock, race track, desert area, death valley national park, california, usa

Caucasian hikers walking on snowy hill

Moving Rocks on Racetrack Playa

Kyoto, Japan

Kyoto, Japan

Granite rocks and tropical vegetation in front of a boat on the sea, northwest coast, Mahe, Seychelles

Fishing boats off the coast of Nha Trang, Khanh Hoa Province, Vietnam, Asia

Fishing boat in safe harbor, Hvar Island, Dalmatian Coast, Croatia

Boat trip to the cliffs, Ponta de Piedade, Lagos, Algarve, Portugal, Europe

Boat trip to the cliffs, Ponta de Piedade, Lagos, Algarve, Portugal, Europe

Boat in La Concha Bay in San Sebastian, Guipuzcoa, Basque Country, Spain, Europe

Fishing boat at sunset, Halong Bay, Vietnam, Southeast Asia

Hvar Island, Dalmatian Coast, Croatia

Fishing boat in front of the Inner Hebrides, Isle of Mull, Scotland, UK, Europe

DEATH VALLEY, CA, JANUARY 07: A mountain biker staring at a "sliding rock" on The Racetrack, a dried lake bed in Death Valley National Park, California on January 07, 2006.