A keyhole to an abandoned house is seen in the village of La Estrella, Spain, June 26, 2018. REUTERS/Susana Vera SEARCH "SPAIN DEPOPULATION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

The sun rises behind the Muenster Cathedral during a cold morning in Bern, Switzerland February 28, 2018. Picture taken through a metal pipe. REUTERS/Stefan Wermuth TPX IMAGES OF THE DAY 

Wax covers the keyhole at the main entrance of the Muslim Brotherhood's office in Amman, after it was shut by police acting on orders of the Amman governor April 13, 2016. REUTERS/Muhammad Hamed 

Head veterinary surgeon Hulya Hartoka stitches the leg of a race horse following keyhole surgery to remove bone fragments at Veliefendi equine hospital in Istanbul April 6, 2015. A state-of-the-art hospital for hundreds of horses run by the Jockey Club of Turkey at Istanbul's Veliefendi racecourse is the country's oldest and biggest. Grooms and trainers at the equine clinic work with vets and nurses while owners hope their prize runners, often worth hundreds of thousands of dollars, will recover quickly and then run faster still. REUTERS/Murad Sezer

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Head veterinary surgeon Hulya Hartoka (L) and veterinary surgeon Dursun Dogan bandage the leg of a racehorse following keyhole surgery to remove bone fragments at Veliefendi equine hospital in Istanbul April 6, 2015. A state-of-the-art hospital for hundreds of horses run by the Jockey Club of Turkey at Istanbul's Veliefendi racecourse is the country's oldest and biggest. Grooms and trainers at the equine clinic work with vets and nurses while owners hope their prize runners, often worth hundreds of thousands of dollars, will recover quickly and then run faster still. REUTERS/Murad Sezer

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Veterinary technician Gokhan Boyraz shaves a racehorse's leg as he prepares it for keyhole surgery to remove bone fragments at Veliefendi equine hospital in Istanbul March 3, 2015. A state-of-the-art hospital for hundreds of horses run by the Jockey Club of Turkey at Istanbul's Veliefendi racecourse is the country's oldest and biggest. Grooms and trainers at the equine clinic work with vets and nurses while owners hope their prize runners, often worth hundreds of thousands of dollars, will recover quickly and then run faster still. REUTERS/Murad Sezer

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Media swarm around an ambulance transporting Uruguayan striker Luis Suarez, who left the hospital after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after suffering a knee surgery in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

The words "stop evictions" are seen next to drawings of houses and keyholes during a gathering to mark the second anniversary of the15M movement in Madrid May 15, 2013. The movement gathered steam as part of the "indignados" (indignant) protests against the government's spending cuts and failure to revive the moribund economy, inspiring "occupy" movements around the globe. REUTERS/Susana Vera (SPAIN - Tags: SOCIETY POLITICS CIVIL UNREST BUSINESS) 

Juan Carlos Castano, 43, looks through the keyhole as he waits for the judicial commission to carry out his eviction in Madrid September 28, 2012. Castano, a Spanish national who came from his native Colombia to Spain in 2000, stopped making mortgage payments after becoming unemployed in late 2009. Spain announced a detailed timetable for economic reforms and a tough 2013 budget based primarily on spending cuts on Thursday in what many see as an effort to pre-empt the likely terms of any international bailout. A quarter of all Spanish workers are unemployed and tens of thousands have been evicted from their homes since a housing bubble burst in 2008 and plummeting consumer and business sentiment tipped the country into a four-year economic slump. REUTERS/Susana Vera (SPAIN - Tags: SOCIETY BUSINESS POLITICS) 

Policemen and security personnel look on as a car drives into former South African President Nelson Mandela's house after announcements that he had been discharged from a hospital in Houghton February 26, 2012. Mandela was discharged from hospital on Sunday after a keyhole abdominal examination showed there was nothing seriously wrong with the 93-year-old anti-apartheid leader, the government said. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS TRANSPORT) 

Journalists wait outside Nelson Mandela's house shortly before announcements that the former South African President had been discharged from an undisclosed hospital in Houghton February 26, 2012. Mandela was discharged from hospital on Sunday after a keyhole abdominal examination showed there was nothing seriously wrong with the 93-year-old anti-apartheid leader, the government said. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: MEDIA POLITICS) 

A girl walks past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS SOCIETY) 

A newspaper vendor holds up a newspaper with a headline on former South African President Nelson Mandela in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH) 

A women and her child walk past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH) 

An elderly women shops from a makeshift store as a young girl walks past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH TPX IMAGES OF THE DAY) 

Dr. Michael Snyder and First Surgical Assistant Tony Covello place a Lap-Band using laproscopic instruments inserted into the belly of Jazmine Raygoza at Rose Medical Center in Denver June 20, 2011. After trying multiple diets and exercise, Jazmine, 17, decided on the Lap-Band treatment with the encouragement of her mother, who recently had a gastric bypass herself. About 17 percent of American kids and teens are obese, according to the Centers for Disease Control and Prevention. Picture taken June 20, 2011. REUTERS/Rick Wilking (UNITED STATES - Tags: HEALTH SOCIETY) 

Maria Aparecida, from Brazil's Movimento dos Sem-Teto (Roofless Movement), eats inside a room, in the former Brazilian Palace Hotel in downtown Sao Paulo November 15, 2010. The hotel, which spans 15 storeys, was taken over about two months ago by 1,200 people from the movement, who now live in the building. Each of the 43 suites of the hotel, which was in operation until the 1980s, is occupied by at least nine people, usually from the same family. Sao Paulo currently has about 14,000 people living on the streets, with more than half of them in the city centre, according to local media. Picture taken through the keyhole of a room. Picture taken November 15, 2010. REUTERS/Nacho Doce (BRAZIL - Tags: SOCIETY IMAGES OF THE DAY) 

Bariatric surgeon Dr. Michael Snyder performs a laparoscopic gastric bypass, with five ports inserted in a semi-circle on Carolyn Dawson inflated abdomen, at Rose Medical Center, in Denver August 30, 2010. Snyder has completed some 451 bariatric surgeries in the past year. Picture taken August 30, 2010. REUTERS/Rick Wilking (UNITED STATES - Tags: HEALTH) 

Boys peep through a door's keyhole during a mass mass circumcision ceremony at a mosque in Kuala Lumpur May 31, 2009. About 50 boys, aged between 7 and 11 years old, were given a grand welcome to a mass circumcision surgery, as some consider circumcision to be a celebration of reaching manhood. Circumcision is compulsory for Muslim boys under the Sharia law (Islamic Law). REUTERS/Zainal Abd Halim (MALAYSIA SOCIETY RELIGION) 

A young girl runs through a keyhole sculpture by artist Jim Lambie in the Royal Botanic Garden in Edinburgh, Scotland July 29, 2008. The sculpture, part of Lambie's 'Secret Affair' work created for outdoor display, consists of seven 8ft tall coloured keyholes and are shown in the gardens as part of the Edinburgh Art Festival which runs from 31st July to 31st August. REUTERS/David Moir (BRITAIN) 

A child runs through a keyhole sculpture by artist Jim Lambie in the Royal Botanic Garden in Edinburgh, Scotland July 29, 2008. The sculpture, part of Lambie's 'Secret Affair' work created for outdoor display, consists of seven 8ft tall coloured keyholes and are shown in the gardens as part of the Edinburgh Art Festival which runs from 31st July to 31st August. REUTERS/David Moir (BRITAIN) 

An official police seal covers a keyhole of an entrance door to a house, where German special police forces arrested three terror suspects in the central German village of Oberschledorn September 5, 2007. Germany said on Wednesday it had foiled a plan by Islamist militants to carry out "massive bomb attacks" against U.S. installations and arrested the three men behind it. Federal prosecutor Monika Harms said the men, two German nationals and one Turk, had been on the verge of launching their attacks after acquiring enough material to make a bomb with explosive power equal to 550-kilograms of TNT. REUTERS/Alex Grimm (GERMANY) REUTERS/Alex Grimm (GERMANY) 

A general view shows the main gate of the "La Casa de la Moneda" in Potosi, some 460 km (286 miles) southeast of LA Paz, August 1, 2007. Potosi's first mint, La Casa de la Moneda, was built during the second half of the 18th century to control minting activities close to where the silver was extracted from the city's famous silver mines. Nowadays it is a popular museum where tourists can make their own coins. REUTERS/David Mercado (BOLIVIA) 

A spider crawls from a keyhole in London, September 20, 2005. REUTERS/Catherine Benson generic CRB 

Previously unseen details of a mysterious, complex structure within the Carina Nebula are revealed by this image of the "Keyhole Nebula," obtained with NASA's Hubble Space Telescope. The picture is a montage assembled from four different April 1999 telescope pointings with Hubble's Wide Field Planetary Camera 2, which used six different color filters. The picture is dominated by a large, approximately circular feature, which is part of the Keyhole Nebula, named in the 19th century by Sir John Herschel. This region, about 8000 light-years from Earth, is located adjacent to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right. The Carina Nebula also contains several other stars that are among the hottest and most massive known, each about 10 times as hot, and 100 times as massive, as our Sun.
(CREDIT Photo by NASA and The Hubble Heritage Team (STScI) REUTERS) 

Sir David Frost apologises to photographers for turning up late to a press conference May 18. Frost and Loyd Grossman co-presenters of Through The keyhole announced that the show will be moved from ITV to Sky One from January 1996