A shrine maiden walks in the snow at the Tsurugaoka Hachimangu Shrine in Kamakura, near Tokyo, Thursday, November 24, 2016. Tokyo residents have woken up to the first November snowfall in more than 50 years. An unusually cold air mass brought wet snow to Japan's capital on Thursday. Above-freezing temperatures kept the snow from sticking, but forecasters said there could be an accumulation of up to 2 centimeters (1 inch). The last time it snowed in central Tokyo in November was in 1962. (Photo by Shizuo Kambayashi/AP Photo)

Georgie Bain takes a selfie with her horse in “Best Friends” in Aberdeen, United Kingdom, Date Unknown. For the first time, the founders of the Comedy Wildlife Photography Awards have launched a photography award show giving proud pet owners a chance to show off their quirky pets. (Photo by Georgie Bain/Barcroft Images/Comedy Pet Photography Awards)

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)

People take part in the “The Burial of the Sardine” funeral procession, which marks the end of carnival festivities, in Madrid, Spain, February 10, 2016. “Mourners” carry a coffin with a mock sardine through the streets to celebrate the countdown to Lent. Spanish painter Francisco de Goya's painting “El entierro de la sardina” (The Burial of the Sardine) was inspired by this tradition, which started in Madrid in the 18th century, around the time of Spanish King Carlos III. (Photo by Juan Medina/Reuters)

Buddhist monks walk past a statue of comic character the Hulk at Tamru temple in Samut Prakan province, Thailand, March 3, 2016. It’s a sign of changing times for Buddhism in Thailand when one sees temples, including Wat Tam Ru, using U.S. comic superheroes to attract children and teenagers into the religion. (Photo by Chaiwat Subprasom/Reuters)

Women, who are members of Saaed group, prepare food to be given out as Iftar meals for the poor and internally displaced Syrians during the month of Ramadan in Damascus, Syria June 18, 2016. Iftar (or Fatoor) is the evening meal when Muslims end their daily Ramadan fast at sunset. Muslims break their fast at the time of the call to prayer for the evening prayer. (Photo by Omar Sanadiki/Reuters)

Skulls are seen at the witch doctor kiosk during the day of offerings to the “Pachamama” (Mother Earth) in El Alto, Bolivia, August 1, 2016. Pachamama is a goddess revered by the indigenous people of the Andes. She is also known as the earth/time mother. In Inca mythology, Pachamama is a fertility goddess who presides over planting and harvesting, embodies the mountains, and causes earthquakes. (Photo by David Mercado/Reuters)

Ra Paulette is an American cave sculptor based in New Mexico who digs into hillsides to sculpt elaborate artistic spaces inside mountains. Reviewer Martha Mendoza in the Los Angeles Times described the caves he created as shrines, as hallowed places, a “sanctuary for prayer and meditation” while others describe the caves as works of art. The caves are finished with “scallops, molded curves, smooth ledges, inlaid stones, narrow pods and crusty ledges”. His caves attract visitors worldwide.