Aerial image of Old Harry Rocks, chalk stacks located directly east of Studland, north of Swanage, Dorset, England, United Kingdom, Europe

Aerial image of Old Harry Rocks, chalk stacks located directly east of Studland, north of Swanage, Dorset, England, United Kingdom, Europe

Chalk Cliffs and Sea Stack at South Haven Point, near Old Harry Rocks, Ballard Down, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Chalk cliffs and sea stack along Ballard Down, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Aerial image of The Needles, a row of three chalk stacks, and Lighthouse, off the western extremity of the Isle of Wight, Alum Bay, Isle of Wight, England, United Kingdom, Europe

Aerial image of The Needles, a row of three chalk stacks, and Lighthouse, off the western extremity of the Isle of Wight, Alum Bay, Isle of Wight, England, United Kingdom, Europe

The Chalk cliffs of Ballard Down with The Pinnacles Stack in Swanage Bay, near Handfast Point, Isle of Purbeck, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

The Chalk cliffs of Ballard Down with The Pinnacles Stack and Stump in Swanage Bay, near Handfast Point, Isle of Purbeck, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Beach, white chalk cliffs, stacks and arches, Whitianga, Coromandel Peninsula, South Auckland, North Island, New Zealand, Pacific

Frozen roll of dollar bills

Newly designed U.S. one hundred dollar bills stacked on chalk board

Young woman during sunset, rocky coast of Scala dei Turchi, limestone rocks, Realmonte, Province of Agrigento, Sicily, Italy, Europe

Limestone rock stack, Great Ocean Road, Port Campbell National Park, Victoria, Australia

Tourists during sunset, rocky coast of Scala dei Turchi, limestone rocks, Realmonte, Province of Agrigento, Sicily, Italy, Europe

Limestone rock stack, Great Ocean Road, Port Campbell National Park, Victoria, Australia

Sunset, rocky coast of Scala dei Turchi, limestone rocks, Realmonte, Province of Agrigento, Sicily, Italy, Europe

Limestone rock stack, vegetation and coastal cliffs, Great Ocean Road, Port Campbell National Park, Victoria, Australia

Male rock climber Adam Stack crimping and hanging out while climbing on a bouldering route in Red Rocks Conservation Area outside of Las Vegas, Nevada.

England, Dorset, Isle of Purbeck, Old Harry Rocks Jurassic Coast.

England, East Sussex, Seaford Head, Snow on cliffs with people toboganing.

England, East Sussex, Seaford Head, Snow on cliffs with people toboganing.