Silbury Hill mound, the largest prehistoric manmade structure in Europe, Wiltshire, England, United Kingdom, Europe

No Entry sign at neolithic prehistoric mound of Silbury Hill, to avoid further human erosion, Wiltshire, England, Silbury Hill mound, the largest prehistoric manmade structure in Europe, Wiltshire, England, United Kingdom, Europe

Silbury Hill mound, the largest prehistoric manmade structure in Europe, Wiltshire, England, United Kingdom, Europe

Silbury Hill neolithic site, the largest manmade prehistoric structure in Europe, Wiltshire, England, United Kingdom, Europe

Silbury Hill neolithic site, the largest prehistoric manmade structure in Europe, Wiltshire, England, United Kingdom, Europe

Spain, wind mill ecological park near almeria.

Wind energy, spain. Windmill ecological park near valencia

Spain. Wind turbines and houses with solar panels in rural areas in andalucia

Spain. Wind turbines in rural areas in andalucia

Spain. Wind turbines in rural areas in andalucia

Spain. Wind turbines in rural areas in andalucia

Stonehenge, Salisbury Plain in Wiltshire, UK attracts crowds on the longest day.

Snow Covered Teepee Banff National Park Canada

Glen Canyon Dam Lake Powell UT USA

Young Disabled Woman Sitting Beside Her Wheelchair In A City Park In Autumn, Edmonton, Alberta, Canada

Young Disabled Woman Sitting Beside Her Wheelchair In A City Park In Autumn, Edmonton, Alberta, Canada

Bell Caves At Beit Guvrin, Israel

Bell Caves At Beit Guvrin, Israel

Athlone, River Shannon, County Westmeath, Ireland

Much of the North side of the island of Molokai in inaccessible. Trade winds blow onshore regularly bringing with them piles of plastic that has been floating around the Pacific Ocean for years and years, Molokai, Hawaii, United States of America

Reef Manta Rays (Manta alfredi), feed over baskets of lights used to attract plankton off the Kona Coast, Kona, Island of Hawaii, Hawaii, United States of America

Much of the north side of the island of Molokai in inaccessible. Trade winds blow onshore regularly bringing with them piles of plastic that has been floating around the Pacific Ocean for years and years, Molokai, Hawaii, United States of America

Much of the North side of the island of Molokai is inaccessible. when trade winds blow onshore regularly bringing with them piles of plastic that has been floating around the Pacific Ocean for years and years, Molokai, Hawaii, United States of America

Cow walks in a circle to turn a piece of manmade equipment, Jaisalmer, Rajasthan, India

Burma (Myanmar), Inle Lake, Ywaha Phaung Daw and Kyaung, bow of ceremonial boat shaped like bird.

Hawaii Maui, Makena, Waterfall, Maui Prince Hotel Courtyard.

California, San Francisco, Golden Gate Bridge in foggy morning light.

Young girl climbing manmade rockface using safety harness, America