Party of trekkers on top of dunes at Chigaga, Draa Valley, Morocco, North Africa

One of the four small gold mummiform coffins placed in the canopic urns, from the tomb of the pharaoh Tutankhamun, discovered in the Valley of the Kings, Thebes, Egypt, North Africa, Africa

One of the four small gold mummiform coffins placed in the canopic urns, from the tomb of the pharaoh Tutankhamun, discovered in the Valley of the Kings, Thebes, Egypt, North Africa, Africa

Stopper in the form of the king's head from one of the four canopic urns, from the tomb of the pharaoh Tutankhamun, discovered in the Valley of the Kings, Thebes, Egypt, North Africa, Africa

Stopper in the form of the king's head from one of the four canopic urns, from the tomb of the pharaoh Tutankhamun, discovered in the Valley of the Kings, Thebes, Egypt, North Africa, Africa

Stoppers in the form of the king's head from the four canopic urns, from the tomb of the pharaoh Tutankhamun, discovered in the Valley of the Kings, Thebes, Egypt, North Africa, Africa

Verbier, Aiguille d`Argentiere Massif in the background, Four Valleys region, Bernese Alps, Valais, Switzerland, Europe

Gorges de la Restonica, Bergeries de Grotelle, Corsica, France, Europe

A four wheel drive vehicle negotiates a road through a wintry landscape in the Elan Valley area in Powys, Wales, United Kingdom, Europe

Durbar Square at dawn with Garuda statue on column facing Krishna Mandir temple built in 1637 in Indian style, with twin roofed pagoda style Jagannarayan temple behind, Patan, Kathmandu Valley, UNESCO World Heritage Site, Nepal, Asia

Verbier, Valais, Four Valleys region, Bernese Alps, Switzerland, Europe

A four wheel drive vehicle and trailer with sheep negotiates a road through a wintry landscape in the Elan Valley area in Powys, Wales, United Kingdom, Europe

Verbier, Valais, Four Valleys region, Bernese Alps, Switzerland, Europe

Verbier, Valais, Four Valleys region, Bernese Alps, Switzerland, Europe

Skiers on a chairlift, Meribel ski resort in the Three Valleys (Les Trois Vallees), Savoie, French Alps, France, Europe

El Tatio Geysers, at 4300m above sea level El Tatio is the world's highest geyser field, the area is ringed by volcanoes and fed by 64 geysers, Atacama Desert, Norte Grande, Chile, South America

Verbier, Valais, Four Valleys region, Bernese Alps, Switzerland, Europe

Verbier, Valais, Four Valleys region, Bernese Alps, Switzerland, Europe

End of desert trek photo, tourist with guide, cook, camel man and donkey, Chigaga, Draa Valley, Morocco, North Africa, Africa

Four-wheel drive vehicle on a road through the Atlas Mountains, in the arid Dades Valley, Morocco, North Africa, Africa

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

Dead and dying Almond trees in Almond groves in Wasco in the Central Valley of California after the irrigation water ran out following the four year long drought in the Western USA. 80% of the world's almonds are grown in California, and it takes 1.1 gallons of water to grow each nut. Many farms have run out of water, and $2.2 Billion has been wiped off the agricultue sector annually. Currently one third of all children in California go to be hungry, as a direct result of job losses connected to the drought. 428,000 acres of farmland have been taken out of production as a result of the drought, in the Central Valley.

The Kern Valley Wildlife Refuge in California's Central Valley was created as important resting and feeding grounds for wildfowl migrating along the pacific flyway. After four years of unprecedented drought, the water shortages in California are critical. The reserve has received only 40% of its usual warer, with the result that most of the lake beds are dried up and dessicated, leaving the birds nowhere to go.

Almond groves being chopped down as there is no longer water available to irrigate them, in Wasco in the Central Valley of California following the four year long drought in the Western USA. 80% of the world's almonds are grown in California, and it takes 1.1 gallons of water to grow each nut. Many farms have run out of water, and $2.2 Billion has been wiped off the agricultue sector annually. Currently one third of all children in California go to be hungry, as a direct result of job losses connected to the drought. 428,000 acres of farmland have been taken out of production as a result of the drought, in the Central Valley.

Almond groves being chopped down as there is no longer water available to irrigate them, in Wasco in the Central Valley of California following the four year long drought in the Western USA. 80% of the world's almonds are grown in California, and it takes 1.1 gallons of water to grow each nut. Many farms have run out of water, and $2.2 Billion has been wiped off the agricultue sector annually. Currently one third of all children in California go to be hungry, as a direct result of job losses connected to the drought. 428,000 acres of farmland have been taken out of production as a result of the drought, in the Central Valley.

Irrigation pipes near Wasco in the Central Valley of California following the four year long drought in the Western USA. Many farms have run out of water, and $2.2 Billion has been wiped off the agricultue sector annually. Currently one third of all children in California go to be hungry, as a direct result of job losses connected to the drought. 428,000 acres of farmland have been taken out of production as a result of the drought, in the Central Valley.

A pumping station sends water uphill over the mountains on the California aquaduct that brings water from snowmelt in the Sierra Nevada mountains to farmland in the Central Valley. Following a four year long catastrophic drought, irrigation water is in short supply, with $2 billion annually wiped off the agricultre sector.

Almond groves in Wasco in the Central Valley of California that are vulnerable following the four year long drought in the Western USA. 80% of the world's almonds are grown in California, and it takes 1.1 gallons of water to grow each nut. Many farms have run out of water, and $2.2 Billion has been wiped off the agricultue sector annually. Currently one third of all children in California go to be hungry, as a direct result of job losses connected to the drought. 428,000 acres of farmland have been taken out of production as a result of the drought, in the Central Valley.

Almond groves being chopped down as there is no longer water available to irrigate them, in Wasco in the Central Valley of California following the four year long drought in the Western USA. 80% of the world's almonds are grown in California, and it takes 1.1 gallons of water to grow each nut. Many farms have run out of water, and $2.2 Billion has been wiped off the agricultue sector annually. Currently one third of all children in California go to be hungry, as a direct result of job losses connected to the drought. 428,000 acres of farmland have been taken out of production as a result of the drought, in the Central Valley.

A forest fire destroys an area of forest in the Little Yosemite Valley in the Yosemite National Park, California, USA. Following four years of unprecedented drought, wildfires are becoming increasingly common. This fire was started by a lightening strike.

Almond trees being irrigated in California's Central Valley, which is in the grip of a four year long drought. The catastrophic drought means that no crops will grow without increasingly scarce irrigation water. Many areas of farmland have been abandoned due to the drought. 80% of the world's almonds grow in California, each Almond takes 1 gallon of water to produce, water that is increasingly unavailable.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe. This shot shows the boat launching jetty, that has been taken as far down the ramp as possible, and is still nowhere near the water level.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

A forest fire destroys an area of forest in the Little Yosemite Valley in the Yosemite National Park, California, USA. Following four years of unprecedented drought, wildfires are becoming increasingly common. This fire was started by a lightening strike.

A forest fire destroys an area of forest in the Little Yosemite Valley in the Yosemite National Park, California, USA. Following four years of unprecedented drought, wildfires are becoming increasingly common. This fire was started by a lightening strike.

The California aquaduct that brings water from snowmelt in the Sierra Nevada mountains to famrland in the Central Valley. Following a four year long catastrophic drought, irrigation water is in short supply, with $2 billion annually wiped off the agricultre sector.

A pumping station sends water uphill over the mountains on the California aquaduct that brings water from snowmelt in the Sierra Nevada mountains to farmland in the Central Valley. Following a four year long catastrophic drought, irrigation water is in short supply, with $2 billion annually wiped off the agricultre sector.

A forest fire destroys an area of forest in the Little Yosemite Valley in the Yosemite National Park, California, USA. Following four years of unprecedented drought, wildfires are becoming increasingly common. This fire was started by a lightening strike.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

Almod trees being irrigated in California's Central Valley, which is in the grip of a four year long drought. The catastrophic drought means that no crops will grow without increasingly scarce irrigation water. Many areas of farmland have been abandoned due to the drought. 80% of the world's almonds grow in California, each Almond takes 1 gallon of water to produce, water that is increasingly unavailable.

The Kern Valley Wildlife Refuge in California's Central Valley was created as important resting and feeding grounds for wildfowl migrating along the pacific flyway. After four years of unprecedented drought, the water shortages in California are critical. The reserve has received only 40% of its usual warer, with the result that most of the lake beds are dried up and dessicated, leaving the birds nowhere to go.

The Kern Valley Wildlife Refuge in California's Central Valley was created as important resting and feeding grounds for wildfowl migrating along the pacific flyway. After four years of unprecedented drought, the water shortages in California are critical. The reserve has received only 40% of its usual warer, with the result that most of the lake beds are dried up and dessicated, leaving the birds few places to go. This is the only area of lake with any water left.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

The Kern Valley Wildlife Refuge in California's Central Valley was created as important resting and feeding grounds for wildfowl migrating along the pacific flyway. After four years of unprecedented drought, the water shortages in California are critical. The reserve has received only 40% of its usual warer, with the result that most of the lake beds are dried up and dessicated, leaving the birds nowhere to go.

A virtually empty farmers water hole in California's Central Valley, which is in the grip of a four year long drought. The catastrophic drought means that no crops will grow without increasingly scarce irrigation water. Many areas of farmland have been abandoned due to the drought.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe, shown here.

An RV that until recently would be 40 feet underwater on the lake bed of Lake Isabella near Bakersfield, East of California's Central valley which is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

A forest fire destroys an area of forest in the Little Yosemite Valley in the Yosemite National Park, California, USA. Following four years of unprecedented drought, wildfires are becoming increasingly common. This fire was started by a lightening strike.

Irrigation pipes in California's Central Valley, which is in the grip of a four year long drought. The catastrophic drought means that no crops will grow without increasingly scarce irrigation water. Many areas of farmland have been abandoned due to the drought.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

A forest fire destroys an area of forest in the Little Yosemite Valley in the Yosemite National Park, California, USA. Following four years of unprecedented drought, wildfires are becoming increasingly common. This fire was started by a lightening strike.

Cotton growing in California's Central Valley, which is in the grip of a four year long drought. The catastrophic drought means that no crops will grow without increasingly scarce irrigation water. Many areas of farmland have been abandoned due to the drought.

The Kern Valley Wildlife Refuge in California's Central Valley was created as important resting and feeding grounds for wildfowl migrating along the pacific flyway. After four years of unprecedented drought, the water shortages in California are critical. The reserve has received only 40% of its usual warer, with the result that most of the lake beds are dried up and dessicated, leaving the birds nowhere to go.

Lake Isabella near Bakersfield, East of California's Central valley is at less than 13% capacity following the four year long devastating drought. The reservoir has dropped so low, that the water level is below the outflow pipe.

The California aquaduct that brings water from snowmelt in the Sierra Nevada mountains to farmland in the Central Valley. Following a four year long catastrophic drought, irrigation water is in short supply, with $2 billion annually wiped off the agricultre sector.

Four tourists with the view onto the Temple of Segesta in the background, Trapani, Sicily, Italy

Man swim and hike canyoning, Raebloch, Emmental valley, Canton of Bern, Switzerland, MR

Young woman canyoning, Valle Maggia, Canton of Ticino, Switzerland, MR

Llama tour to the summit of Boeses Weibele Mountain in the Defregger Group, Carnic Dolomites, Upper Lienz, Puster Valley, East Tyrol, Austria, Europe

USA, United States of America, Arizona: Monument Valley, giant rock monoliths in the Navaho indian reservation.

Boys of Ari tribe walking on stilts, Omo Valley, Ethiopia, Africa

Bernina Range with Mount Piz Bernina, 4048 metres above sea level, and Mount Piz Morteratsch, 3751 metres above sea level, Buendner Alps, Canton of Graubuenden, Switzerland, Europe

Toyota jeep on a desert road in the Mandara valley, Ubari Sand Sea, Sahara, Libya, Africa

Four Spot Orb Weaver (Araneus quadratus), female, Riedener Lake, Lech Valley, Ausserfern, Tyrol, Austria, Europe

Christina Hotel, a four star hotel, Stern locality also known as La Villa, Abtei, Badia, Gadertal valley, Dolomites, province of Bolzano-Bozen, Italy, Europe

Ski touring in the ascent to the Seekofel in the Fanes-Senes-Prague in the Dolomites, in the back right the Seekofel, left the Kleiner Seekofel, St. Vigil, Fanes-Sennes-Prags Nature Park, Puster Valley, Province of South Tyrol, Italy, Europe

Jeep driving through the Mai Chau Valley, Vietnam, Asia

View over the Neckar valley and the four-castle town of Neckarsteinach, Hesse, Germany, Europe

Road from the Heckman Pass to the Bella Coola Valley, Canada

Four road bikers on a winding mountain road on their way to the Emosson reservoir lake in the Alps on the border of France and Switzerland. It is an early morning training session of the local cyclists. The sun is rising, clouds are in the valley, and in the background the mountain peaks of Chamonix are visible, including Mont Blanc, the highest mountain of the Alps. This climb will be stage 17 of the 2016 Tour de France on July 20th 2016. Depart is in Bern and the finish near the Emosson reservoir at 1960 meters height.

Four road bikers on a winding mountain road on their way to the Emosson reservoir lake in the Alps on the border of France and Switzerland. It is an early morning training session of the local cyclists. The sun is rising, clouds are in the valley, and in the background the mountain peaks of Chamonix are visible, including Mont Blanc, the highest mountain of the Alps. This climb will be stage 17 of the 2016 Tour de France on July 20th 2016. Depart is in Bern and the finish near the Emosson reservoir at 1960 meters height.

Sunset at Monument Valley in Utah and Arizona on the Navajo Indian Reservation

Relief of Pharaohs, Tomb of Ramses V & VI, KV9, Valley of the Kings, UNESCO World Heritage Site; Luxor, Egypt

Bison In Fog In Marshy Area Of Hayden Valley, Yellowstone National Park, Wyoming, United States Of America

Hawaii, Kauai, Mt. Waialeale, Wettest spot on Earth.

Meije glacier lift (1450 - 3200m) with Les Terrasses in the background, one of the four hamlets of La Grave, upper Romanche valley, Hautes-Alpes, France

Les Terrasses, one of the four hamlets of La Grave, upper Romanche valley, Hautes-Alpes, France