This picture taken on October 10, 2020 and released from North Korea's official Korean Central News Agency (KCNA) on October 11, 2020 shows the military parade during a ceremony to mark the 75th anniversary of the Workers' Party of Korea at Kim Il-sung Square of Pyongyang. (Photo by KCNA via KNS/AFP Photo)

14 week-old twin polar bear cubs play during their first presentation to the media in Hellabrunn zoo on March 19, 2014 in Munich, Germany. The male and female twins were born on December 9, 2013 in the zoo. (Photo by Alexandra Beier/Getty Images)

The Lumix GX1 single lens reflex (SLR) camera with 14-42 mm powerzoom lens is displayed at the Panasonic booth at the 2012 International Consumer Electronics Show at the Las Vegas Convention Center January 10, 2012 in Las Vegas, Nevada. The new camera comes with an external viewfinder and flash and an ISO up to 12,800. The camera as shown sells for USD 949; the camera body alone is USD 799. (Photo by Ethan Miller/Getty Images)

Wrestling camel “Faytoncu” adorned with colourful ornaments is escorted by his groom as he waits for the Camel Beauty Contest ahead of the annual Selcuk-Efes Camel Wrestling Festival in the Aegean town of Selcuk, near Izmir, Turkey, January 14, 2017. (Photo by Murad Sezer/Reuters)

Miss Langata Prison 2016 Ruth Kamande poses for a photograph as female inmates participate in a fashion parade as part of their Valentine's Day celebration, dubbed “love behind bars” inside the Langata Women Maximum Security Prison in Kenya's capital Nairobi, February 14, 2017. (Photo by Thomas Mukoya/Reuters)

Sri Lankan participants control their bulls during a traditional cart race to mark the Sri Lanka National New Year in Homagama near Colombo on April 23, 2017. The new year marked by both the majority Sinhalese and minority Tamil population fell on April 14. (Photo by Lakruwan Wanniarachchi/AFP Photo)

In this photo taken on Friday, July 14, 2017, a student at a paramilitary camp for children calls the rank to attention outside Kiev, Ukraine. As the deadly conflict in eastern Ukraine entered its third year, some parents in Ukraine are anxious to make sure their children are ready to fight it, instead of swimming and playing volleyball. (Photo by Efrem Lukatsky/AP Photo)

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)