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)

Thailand’s Surasak Waenwiset tries a shot as Hungary’s Marcell Fenyvesi stands nearby, during their Beach Handball Men’s Tournament match in Tecnopolis Park, during the Youth Olympic Summer Games in Buenos Aires, Argentina on October 9, 2018. (Photo by Florian Eisele/AP Photo)

A staff member of Sony Computer Entertainment tries out PlayStation 4's virtual reality headset Project Morpheus at its booth in Tokyo Game Show 2014 in Makuhari, east of Tokyo September 18, 2014. (Photo by Yuya Shino/Reuters)

Girls stand on the rocks consulting a magazine as they carry their trays with fruits for sell, in Dakar, Senegal on February 28, 2021. (Photo by Zohra Bensemra/Reuters)

Two men cross the street in front of a burned-out bus standing beneath a residential building, in the district Neukoelln in Berlin, Germany, Tuesday, January 3, 2023. People across Germany on Saturday resumed their tradition of setting off large numbers of fireworks in public places to see in the new year. The bus was set on fire during the New Year's celebrations. (Photo by Markus Schreiber/AP Photo)

A woman prays during a Sarwan Brata (fast) offering to Lord Shiva, the Hindu god of creation and destruction, at the Pashupatinath Temple in Kathmandu, Nepal, 21 July 2025. Nepalese Hindu women wearing red, yellow and green attire, flock to temples during Sarwan month to pray for a long and prosperous life for their husbands, or to find a good husband. (Photo by Narendra Shrestha/EPA)

Colombian-American actress Sofia Vergara shows some skin while basking on then beach early December 2024. (Photo by sofiavergara/Instagram)

Indonesian mahouts (elephant masters) bathe elephants prior to a daily patrol at a Conservation Respons Unite (CRU) to control elephant-human conflicts in Serbajadi, East Aceh on April 7, 2016. Elephants have joined the front line in the fight against poaching and illegal logging in the dense jungles of Sumatra. Guided by their Indonesian mahouts, they trek alongside rivers, over rough terrain and deep into the rainforest in an area that is home to numerous endangered species, from orangutans to tigers, but which has suffered devastating deforestation in recent years. (Photo by AFP Photo/Januar)