England, County Durham, Cow Green Reservoir. Aerial photo of Cow Green Reservoir, built to supply water to the industries of Teesside.

United States of America, Utah, Zion National Park. Checkerboard Mesa, an unusual feature of the popular Zion National Park.

United States of America, Utah, Zion National Park. Checkerboard Mesa, an unusual feature of the popular Zion National Park.

United States of America, Utah, Zion National Park. Checkerboard Mesa, an unusual feature of the popular Zion National Park.

United States of America, Utah, Zion National Park. Early morning light on the geological features of the Zion National Park.

United States of America, Utah, Zion National Park. Dawn light hits the mountain known as 'The Watchman' in the Zion National Park.

United States of America, Utah, Zion National Park. Dawn light hits the mountain known as 'The Watchman' in the Zion National Park.

United States of America, Utah, Zion National Park. Dawn light hits the mountain known as 'The Watchman' in the Zion National Park.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Arizona, Monument Valley Tribal Park. The iconic landscape of the sandstone buttes of the Monument Valley Tribal Park located in the Navajo Nation straddling the Arizona / Utah border.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

United States of America, Utah, Bryce Canyon National Park. Hoodoos dominate the landscape of the Bryce Amphitheater in the Bryce Canyon National Park.

Wales, Gwynedd, Snowdonia National Park. Large rock boulders located on a plateau near the Miners Track – A popular walking route to the summit of Snowdon.

Scotland, Scottish Highlands, Cairngorms National Park. Late evening light on fast moving clouds above the Cairngorms massif.

England, Northumberland, Hadrian's Wall. Farmhouse and surrounding Northumberland countryside.