Huge sharp pinnacles of the Omarama clay cliffs, Otago, South Island, New Zealand, Pacific

Clay Cliffs, Omarama, Canterbury, South Island, New Zealand, Pacific

Desert, Wadi Rum, Jordan, Middle East

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

A Hoodoo of expansive clay called Bentonite in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Mounds and cliffs of expansive clay called Bentonite in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

Desert, Wadi Rum, Jordan, Middle East

Desert, Wadi Rum, Jordan, Middle East

Desert, Wadi Rum, Jordan, Middle East

Red-and-green Macaws (Ara chloropterus) at clay lick, Manu National Park, Peruvian Amazon, Peru, South America

Cliffs at sunset, Paria Movie Set, Grand Staircase-Escalante National Monument, near Page, Arizona, United States of America, North America

The Remains of the Godwin battery on the beach at Kilnsea at the head of Spurn point on Yorkshires East Coast, UK. Initially constructed during the First World War, the Godwin Battery was added to during the Second World War. It comprised of gun emplacements, search light, barracks, officers’ mess, and a hospital. This section of coastline is the fastest eroding coastline in Europe. The soft boulder clay cliffs are easily eroded and have been eroding since Roman Times, but recently the climate change impacts of increased stormy weather, increased heavy rainfall events and sea level rise have accelerated the rate of erosion. The average rate of attrition is 1.5metres per year, last year it was 5 metres.

The Remains of the Godwin battery on the beach at Kilnsea at the head of Spurn point on Yorkshires East Coast, UK. Initially constructed during the First World War, the Godwin Battery was added to during the Second World War. It comprised of gun emplacements, search light, barracks, officers’ mess, and a hospital. This section of coastline is the fastest eroding coastline in Europe. The soft boulder clay cliffs are easily eroded and have been eroding since Roman Times, but recently the climate change impacts of increased stormy weather, increased heavy rainfall events and sea level rise have accelerated the rate of erosion. The average rate of attrition is 1.5metres per year, last year it was 5 metres.

Cliffs made from soft grey clay sediments, Gnejna Bay, Ghajn Tuffieha, Malta, Mediterranean

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

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

Colorful adobe Hotel Bait, Beit Bugshan, Khaylla, Khaylah village, Wadi Doan, Wadi Hadramaut, Yemen, Arabia, Southwest Asia

Colorful adobe Hotel Bait, Beit Bugshan, Khaylla, Khaylah village, Wadi Doan, Wadi Hadramaut, Yemen, Arabia, Southwest Asia

Landscape, Omarama Clay Cliffs, Ahuriri River Clay Cliffs, Waitaki District, Canterbury, South Island, New Zealand, Oceania

fall colour and cliff face along Pine Creek USA

Big colony of the bee-eaters (Merops apiaster) in their burrows on a clay wall. Africa. Uganda.

Big colony of the bee-eaters (Merops apiaster) in their burrows on a clay wall. Africa. Uganda.