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The Wanming Pagoda in the ancient town of Fenghuang at night. China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Detail of vegetation growing on the limestone cliffs along the Li River in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A bamboo forest growing along the bank of the Li River in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A foggy morning view of the ancient town of Fenghuang from the old city wall. China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The dichotomy of a modern satellite dish on an old traditional farm house in a small town in rural China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Lysimachia kwangtungensis has no common name. It is a perennial flowering herb native to China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Lysimachia kwangtungensis has no common name. It is a perennial flowering herb native to China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Cormorants on a raft in the Tuojiang River with the city of Fenghuang lit up at night. China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The Li River and forested limestone karst formations in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The Li River and forested limestone karst formations in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The Li River and forested limestone karst formations in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A traditional broom made of small branches leaning against a building in the Hunan Province of China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Chinese tourists crossing Tiananmen Square in the rain. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Early morning fog in the Mutianyu Valley below the Great Wall of China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The cable car to carry tourists from Mutianyu to the Great Wall in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The ornate gate into Beihai Park with the White Dagoba in the background. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The White Dagoba or Bai Ta stupa and ShanYin Pavilion in Beihai Park in Bejing,. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Detail of a Chinese lion dance mask used for celebrating the Chinese New Year. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Detail of the Communist symbols over the entrance to the National Museum of China with the moon. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Chinese tourists below the cable car to the Great Wall on the ridge above Mutinayu in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Chinese tourists below the cable car to the Great Wall on the ridge above Mutinayu in China. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Food vendors with food for sale in the street market at night in the ancient town of Fenghuang

Food vendors with food for sale in the street market at night in the ancient town of Fenghuang

Food vendors with food for sale in the street market at night in the ancient town of Fenghuang

A cityscape of downtown Beijing with the Wanchun Pavilion on Coal Hill in Jingshan Park at left. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An ethnic Miao woman sews souvenir purses on the street in the ancient town of Fenghuang

Traditional Diaojiao houses on stilts along the banks of the Tuojiang River. Ancient town of Fenghuang

Traditional Diaojiao houses on stilts along the banks of the Tuojiang River. Ancient town of Fenghuang

Traditional Diaojiao houses on stilts along the banks of the Tuojiang River. Ancient town of Fenghuang

Stylized phoenix statues on the rooftops of the ancient town of Fenghuang

A small Chinese boy holds a bundle of green onions in the ancient town of Fenghuang

A small Chinese boy holds a bundle of green onions in the ancient town of Fenghuang

And off road vehicle drives on sand dunes of the Erg Awbari. Libya. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A bas relief frieze of Buddha over a small gate through the city wall of the Fenghuang Ancient Town

A bas relief frieze of Buddha over a small gate through the city wall of the Fenghuang Ancient Town

Manhattan Bridge at night. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The hIghway bridge frames the Fenghuang Bridge lit up at night in Fenghuang

Buildings in the Financial district. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Empire State Building. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Grand Central station. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Bridges over the Tuojiang River lit up at night in Fenghuang

Diaojiao-style buildings on stilts next to the Phoenix Hong Bridge at night. Fenghuang

Traditional Diaojiao-style Chinese buildings lit up at night along the Tuojiang River in Fenghuang

A Chinese woman washes laundry by hand on the steps into the Tuojiang River in Fenghuang

A man washed dishes by hand in a bowl outside a restaurant in the ancient town of Furong

The Wanming Pagoda by the Tuojiang River

Low angle view of Aurora borealis at night. Sweden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The blowout preventer is a safety device attached to the wellhead during certain maintenance work. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Hydraulic oil well pumping unit being set down with a telehandler after removal from the wellhead. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The traveling block on a portable truck-mounted oil well service workover rig in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The traveling block on a portable truck-mounted oil well service workover rig in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Acacia tree at sunrise. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Joshua Tree NP. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

V & A Waterfront at dusk. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Manhattan Bridge. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Manhattan Bridge. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Times square at dusk. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Frisay market in Union square. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Frisay market in Union square. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Madison square. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Lemaire channel in Antarctica. Antarctica. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Lemaire channel in Antarctica. Antarctica. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Bavarian forest in autumn. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Brooklyn bank in the mist. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Manhattan bridge in the morning mist. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Exterior view of the Guggenheim museum. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Brooklyn bridge through a window. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Manhattan bridge in the morning mist. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Manhattan bridge in the morning mist. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of Manhattan and the Freedom Tower. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of the Flatiron building in Madison square. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of the Flatiron building in Madison square. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

People playing music in the subway. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Sunset on the Grey Lake. Ultima Esperanza Chile. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Grey glacier and Grey Lake. Ultima Esperanza Chile. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A woman does laundry in the Tuojiang River in front of the Fenghuang Bridge. Fenghuang

Traditional architecture of the ancient town of Furong

The Fenghuang Bridge and highway bridge over the Tuojiang River

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

Traditional woven bamboo conical hats for sale on the street in the ancient town of Furong

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

Bamboo containers of rice wine for sale on the street in the ancient town of Furong

Split bamboo birdcages on display for sale on the street in the ancient town of Furong

Split bamboo birdcages on display for sale on the street in the ancient town of Furong

The Wangcun Waterfall separates the ancient town of Furong in Hunan Province

An old stone grist mill in the ancient town of Furong

A traditional rice wine distillery in the ancient town of Furong

Detail of decorative upturned ridgeline on a wall in the ancient town of Furong

Woven bamboo baskets with back straps for sale on the street in the ancient town of Furong

A Chinese man in a conical hat trims small onions for cooking in the ancient town of Furong

A Chinese man in a conical hat trims small onions for cooking in the ancient town of Furong

A Chinese mother carrying her baby daughter in a basket on her back in the ancient town of Furong

A shop owner on a pedestrian street with goods for sale in the ancient town of Furong

A message in Chinese script wriiten on an old stone wall in the ancient town of Furong

Service crew by a partially disassembled blowout preventer on an oil well head undergoing intervention. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A young woman poses in the traditional ceremonial dress of the MIao ethnic minority in Fenghuang

A young woman poses in the traditional ceremonial dress of the MIao ethnic minority in Fenghuang

The Bajiaolou Palace on high hilltop overlooks the city of Fenghuang

An early morning view of the Fenghuang Bridge over the Tuojiang River

An early morning view of the Fenghuang Bridge over the Tuojiang River

A man shapes a table top with a bow saw in a street-side woodshop in the ancient town of Furong

An older Chinese woman walks across a wooden bridge over the Tuojiang River in Fenghuang

Water flows over an s-shaped weir across the Tuojiang River in Fenghuang

An oil storage tank battery and separating equipment on an oil well location in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Separators and a crude oil storage tank battery on an oil well location in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A conventional horsehead oil well pump jack unit on an oil well site in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig on an oil well in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A telescoping truck-mounted workover rig telescoped down prior to moving to another oil well location. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A telescoping truck-mounted workover rig folding down prior to moving to another oil well location. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A telescoping truck-mounted workover rig folding down prior to moving to another oil well location. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A partially disassembled blowout preventer on an oil well head undergoing intervention. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A crude oil collection pipeline in an oil field in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A crude oil collection pipeline in an oil field in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A crude oil collection pipeline in an oil field in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A crude oil collection pipeline in an oil field in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A telescoping truck-mounted workover rig folding up on an oil well location. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A telescoping truck-mounted workover rig folding up on an oil well location. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig on an oil well in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid tanker carrying acid for acidizing an oil well to restore production. Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid pump truck for pumping acid down an oil well to dissolve deposite impeding production. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid pump truck for pumping acid down an oil well to dissolve deposite impeding production. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid tanker carrying acid for acidizing an oil well to restore production. Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid tanker and pumper truck for acidizing an oil well to restore production. Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid pump truck for pumping acid down an oil well to dissolve deposite impeding production. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An acid tanker and pumper truck acidizing an oil well to restore production. Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

Ice formations covered by snow at Tornetrask Lake. Sweden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

An empty road leading to Cape of Good Hope Cape Town Western Cape South Africa. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

An empty road leading to Cape of Good Hope Cape Town Western Cape South Africa. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Frozen Tornetrask Lake in Sweden. Sweden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Landscape view of frozen Tornetrask Lake. Sweden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A Frozen waterfall in Sweden. Sweden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Salt crust in tyhe Badwater Basin. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of Zabriskie Point. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

An emprty road in Joshua Tree NP. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Bedouin family in a traditional tent. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A cityscape of Manhattan skyline and Brooklyn bridge. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of Freedom Tower from Battery place. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Wall street sign in New York Financial district. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Broadway sign in New York Financial district. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

FDNY 14 Engine fire fighters quarter. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

FDNY 14 Engine fire fighters quarter. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A View of Manhattan from Empire State Building. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A View of Manhattan from Empire State Building. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

People walking on a New York City subway station. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A colorful house in Cerro Alegre District. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Sunset over Torres del Paine. Ultima Esperanza Chile. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A mother and child pose in the traditional ceremonial dress of the Miao ethnic minority in Fenghuang

Great Cormorants resting on a raft in the Tuojiang River with a stone bridge behind in Fenghuang

The plains of Masai Mara dotted by acacia trees. Kenya. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A canyon along the Artist Drive road in the Death Valley NP. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The 'Artist's Palette'in the Death Valley NP. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The New York Knicks versus the Phoenix suns during an NBA match at Madison Square Garden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Brooklyn bridge and New York City skyline in the morning mist. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Manhattan skyline and the Brooklyn bridge in the mist at dusk. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Manhattan skyline and the Brooklyn bridge in the mist at dusk. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Icebergs floating in the Grey Lake with Torres del Paine in the background. Ultima Esperanza Chile. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Detail of Ice stalactites along the bank of Tornetrask Lake. Sweden. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A landscape of Badwater Basin in the Death Valley. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A landscape of Badwater Basin in the Death Valley. California USA. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of V & A Waterfront and Table mountain in the background. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of New York City skyline in the morning mist. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of the Manhattan bridge from Washington street in Brooklyn. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Battery Park City and the Freedom Tower at World Trade Center. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

Battery Park City and the Freedom Tower at World Trade Center. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A View of Manhattan and Chrysler Building from the roof of Empire State Building. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

A view of the granite towers of Cuernos del Paine. Ultima Esperanza Chile. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The granite towers of Cuernos del Paine. Ultima Esperanza Chile. (Photo by: Sergio Pitamitz / VWPics/Universal Images Group via Getty Images)

The Wanming Pagoda reflected in the Tuojiang River

A motorcycle license plate in Fenghuang

The derrickman being lowered to the ground by his safety harness on an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The operator on a well service workover rig running the controls on the rig on an oil well. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The operator on a well service workover rig running the controls on the rig on an oil well. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The derrickhand or derrickman working in the rod basket on the mast of an oil field workover rig. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig on an oil well in Utah. Behind are the La Sal Mountains & Behind the Rocks. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The well service crew picks up the rear load beam for a workover rig with a telehandler on a oil well site. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A well service hand on top of a hydraulic pumping unit prepares to attach the traveling block to the unit. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A well service hand on top of a hydraulic pumping unit prepares to attach the traveling block to the unit. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A well service hand on top of a hydraulic pumping unit prepares to attach the traveling block to the unit. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The well service crew on a workover rig connects the hoses for a hot oil treatment on an oil well. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

The well service crew on a workover rig uses power tongs to reconnect the sections of tubing on an oil well. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A derrickman or derrickhand on the tubing board on the mast of a workover rig on an oil well in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A derrickman or derrickhand on the tubing board on the mast of a workover rig on an oil well in Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig providing maintenance on an oil well in the canyon country of Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig on an oil well in Utah. Behind are the Monitor & Merrimac Buttes & Book Cliffs. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig on an oil well in Utah. Behind are the Monitor & Merrimac Buttes & Book Cliffs. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig providing maintenance on an oil well in the canyon country of Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig providing maintenance on an oil well in the canyon country of Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig providing maintenance on an oil well in the canyon country of Utah. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

A pulling unit or workover rig on an oil well in Utah. Behind are the Monitor & Merrimac Buttes & Book Cliffs. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)

An hydraulic pumping unit on an oil well in Utah. Behind are the La Sal Mountains with new snow. (Photo by: Jon G. Fuller / VWPics/Universal Images Group via Getty Images)