People climb on an artificial ice-wall in Liberec, about 100 km north of Prague, Czech Republic, Saturday, January 23, 2015. The wall was prepared in a former quarry just near the centre of the city. (Photo by Radek Petrasek/CTK via AP Photo)

Ngorongoro Crater (Tanzania). At 610m deep and 260 sq km, this is the largest unflooded caldera in the world. A blue-green vision from above it's a haven for engangered wildlife and Maasai livestock. The crater was formed three million years ago when a giant volcano, which could have been as high as Kilimanjaro, exploded and collapsed. The caldera formed the concentric fractures in the crust cracked down to a magma reservoir deep underground. (Photo by John Bryant/Getty Images)

A man wear a phallic-shaped hat during Kanamara Matsuri (Festival of the Steel Phallus) on April 1, 2018 in Kawasaki, Japan. The Kanamara Festival is held annually on the first Sunday of April. The pen*s is the central theme of the festival, focused at the local pen*s-venerating shrine which was once frequented by prostitutes who came to pray for business prosperity and protection against sexually transmitted diseases. Today the festival has become a popular tourist attraction and is used to raise money for HIV awareness and research. (Photo by Carl Court/Getty Images)

A heavily tattooed Japanese woman poses for photographs near Asakusa Temple during the third and final day of Sanja Festival, on May 20, 2018 in Tokyo, Japan. Sanja Festival is one of Japan's major festivals and is held annually in the Asakusa area of Tokyo. (Photo by Carl Court/Getty Images)

Bikini Contest in Daytona Beach, Florida, USA. (Photo by Evan Hurd/Sygma/Sygma via Getty Images)

Off from school due to the Thanksgiving holiday this week, Felix Naranch, 7, right, and his brother Asa Naranch, 3, play with their father Stu Naranch in a pile of fall leaves that they raked together in a park, Tuesday, November 23, 2021, in Washington. (Photo by Jacquelyn Martin/AP Photo)

People look at a dead pilot whale on a beach in Panadura on November 3, 2020. Rescuers and volunteers were racing since November 2 to save about 100 pilot whales stranded on Sri Lanka's western coast in the island nation's biggest-ever mass beaching. (Photo by Lakruwan Wanniarachchi/AFP Photo)

Women take part in a rally called “March of Whores” to protest against discrimination and violence against women on International Women's Day in Bogota, Colombia, March 8, 2016. (Photo by John Vizcaino/Reuters)