England, Cumbria, North West Penines, Great Rundel Beck viewed from Dufton Pike.

England, Cumbria, North West Penines, Great Rundel Beck viewed from Dufton Pike.

England, Cumbria, North West Penines, View over High Cup Gill.

England, Cumbria, North West Penines, High Cup Nick showing hard limestone whish resisted glacial erosion.

England, Cumbria, North West Penines, View of High Cup Gill from High Cup Nick.

High altitude view across mountains and valleys in Tibetan region of Litang county, Szechuan Province, China.

Mexico, Oaxaca, Blue early morning light in Central Oaxaca Valleys.

USA, Arizona, Lake Mead, Aerial view.

USA, Arizona, Lake Mead, Aerial view.

USA, Arizona, Grand Canyon, Aerial view of the western Grand Canyon.

USA, Arizona, Grand Canyon, Aerial view of the western Grand Canyon.

USA, Arizona, Grand Canyon, Aerial view of the western Grand Canyon.