To an outsider, their passion is at times illegal and often on the verge of life and death. But climbing rooftops of high-rise buildings and exploring abandoned facilities is in the blood of these young Muscovites. The small group calls itself “Rudex”, which stands for “roof and decay exploration”, and is akin a Western youth craze known as urbex or “urban exploration” of man-made structures. Here: Urban explorer Vad Him of Rudex team jumps whilst on a rooftop in Moscow, Russia, August 14, 2017. (Photo by Maxim Shemetov/Reuters)

An emotional former President George Bush, sniffs after touching the flag-draped casket of his father, former President George H.W. Bush, during his State Funeral at the National Cathedral, Wednesday, December 5, 2018, in Washington. (Photo by Andrew Harnik/Pool via Reuters)

The Swiss Air Force Patrouille Suisse aerobatic team performs during the men's downhill race at the Alpine Skiing FIS Ski World Cup in Wengen, Switzerland, Saturday, January 19, 2019. (Photo by Anthony Anex/Keystone via AP Photo)

British singer-songwriter Rita Ora wowed her fans as she stripped off her to bikini and smeared mud on her face in the second decade of April 2022. The 31-year-old, who is thought to currently be in New Zealand, looked incredible in a series of snaps taken on the beach. (Photo by Instagram)

Members of South Korean K-Pop girl group Brave Girls pose on the red carpet at KCON Seoul 2022 in Seoul on May 7, 2022. (Photo by Anthony Wallace/AFP Photo)

American singer Ashley Nicolette Frangipane, known professionally as Halsey wears eye-catching makeup to celebrate AF 94 in the last decade of July 2022. (Photo by iamhalsey/Instagram)

English TV personality Chloe Ferry joins friends Kimberly Hart-Simpson (Coronation Street) Sophie Kasaei, Abbie Holborn, Bethan Kershaw and Tahlia Chung (Geordie Shore) to LooseFest 22 on July 30, 2022. LooseFest is one of the largest music festivals ever to take place in the North of England and is located on the city of Newcastle's famous Town Moor. Pictured: Chloe Ferry, Kimberly Hart-Simpson, Sophie Kasaei. (Photo by Terry Blackburn/Backgrid UK)

A painted figure is seen on a wall of the home of the mother of Robert E. Crimo III, the 21-year-old suspect facing seven counts of first-degree murder in an attack on a Fourth of July parade, in Highland Park, Illinois, U.S. July 6, 2022. (Photo by Cheney Orr/Reuters)