Revellers try to hold on to a wild horse during the “Rapa das Bestas” traditional event in the village of Sabucedo, northwestern Spain, July 5, 2015. On the first weekend of the month of July, hundreds of wild horses are rounded up, trimmed and groomed in different villages in the Spanish northwestern region of Galicia. (Photo by Miguel Vidal/Reuters)

An exhausted and frustated migrant holds his head after he missed to get a place on a train heading to the Serbian border at the train station in Gevgelija, The Former Yugoslav Republic of Macedonia, August 13, 2015. From the beginning of the year to mid-June 2015, nearly 160,000 migrants landed in the southern European countries, mainly Greece and Italy, on their way to wealthier countries in Western and Northern Europe, according to estimates by the International Organization for Migration (IOM). (Photo by Georgi Licovski/EPA)

Cows rush through mud and water while jockey holds onto their tails, on March 12, 2016 in Padang, West Sumatra, Indonesia. For hundreds of years these farmers have competed in one of the worldís most oddest races in the hopes of showing off their cattle. Known as Pacu Jawi the traditional cow race takes place in Padang, West Sumatra, and has become the highlight of the year for locals. (Photo by Teh Han Lin/Barcroft Images)

Miss France Iris Mittenaere (R) and Miss Haiti Raquel Pelissier hold hands before Mittenaere is announced winner of the 65th Miss Universe beauty pageant at the Mall of Asia Arena, in Pasay, Metro Manila, Philippines January 30, 2017. (Photo by Erik De Castro/Reuters)

Vietnam’s Son Doong cave, the largest in the world, could hold a 40-story skyscraper inside. The pristine ecosystem has its own river and jungle. Despite its size, Son Doong wasn’t discovered until 1991. It was lost again for nearly two decades and was fully explored for the first time in 2009. (Photo by Jason Speth/HuffPost)

A stewardess holding a lightsabre poses for photos with visitors during a tour of the Star Wars themed All Nippon Airways ANA R2D2 Boeing 787 Dreamliner aircraft at Singapore's Changi Airport November 12, 2015. The aircraft was opened to the media on Thursday as it makes its first Asian stop outside Japan. (Photo by Edgar Su/Reuters)

Mexican collector Pablo Perez, holds up a Star Wars R2-D2 toy while he displays a toy collection of Star Wars characters and items at his home in Monterrey, Mexico December 12, 2015. Perez has collected more than 3,000 toys and items from the Star Wars movie series over 10 years, local media reported. (Photo by Daniel Becerril/Reuters)

An anti-coup protester holds a Burkinabe flag in Ouagadougou, Burkina Faso, September 18, 2015. Security forces in the capital of Burkina Faso fired in the air on Friday to disperse demonstrators who burned tyres and blocked neighborhood streets to protest at a military coup this week that derailed a democratic transition. The head of a military junta in Burkina Faso which took power on Thursday has freed interim President Michel Kafando and two of his ministers, state television said on Friday. (Photo by Joe Penney/Reuters)