Members of the special operations team conduct a building climbing training in Qinzhou, south China's Guangxi Zhuang Autonomous Region, April 13, 2021. (Photo credit should read Costfoto/Barcroft Media via Getty Images)

Jordan Mann (R) falls into the water as he and Jordan Cross compete in the first round of Men's 3000 Meters Steeplechase during day four of the 2020 U.S. Olympic Track & Field Team Trials at Hayward Field on June 21, 2021 in Eugene, Oregon. (Photo by Patrick Smith/Getty Images)

Caio Souza of Team Brazil competes on vault during Men's Qualification on day one of the Tokyo 2020 Olympic Games at Ariake Gymnastics Centre on July 24, 2021 in Tokyo, Japan. (Photo by Mike Blake/Reuters)

Martina Maggio, Alice D'Amato, Lara Mori, Asia D'Amato, and Vanessa Ferrari of Team Italy pose in front of the rings during Women's Qualification on day two of the Tokyo 2020 Olympic Games at Ariake Gymnastics Centre on July 25, 2021 in Tokyo, Japan. (Photo by Mike Blake/Reuters)

Caterine Ibarguen of Team Colombia competes in the Women's Triple Jump Qualification on day seven of the Tokyo 2020 Olympic Games at Olympic Stadium on July 30, 2021 in Tokyo, Japan. (Photo by Matthias Hangst/Getty Images)

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)

Gold medalists Kikkan Randall and Jessica Diggins of the United States dancing during the medal ceremony for Cross-Country Skiing – Ladies' Team Sprint Free on day 13 of the PyeongChang 2018 Winter Olympic Games at Medal Plaza on February 22, 2018 in Pyeongchang-gun, South Korea. (Photo by Eric Gaillard/Reuters)

The Washington Wizards dancers strike a pose during the team’s basketball game against the Minnesota Timberwolves at Capital One Arena on November 28, 2022 in Washington, DC. The Wizards won 142-127. (Photo by Geoff Burke/USA Today Sports via Reuters)