Tourists visit the Corral Canyon Cave in Malibu, Calif., Friday, May, 6, 2016. The cave, better known by the misleading moniker “Jim Morrison Cave” is now closed to the public until further notice. Large crowds have shown up on a daily basis to see the often vandalized cave and in some cases add to the vandalism with graffiti of their own. (Photo by Damian Dovarganes/AP Photo)

A participant runs on stairs during a vertical run event at China World Summit Wing hotel in Beijing, China, September 19, 2015. About 800 runners took part in the event on Saturday, which takes runners up 82 floors, covering a total of 2,041 steps to a height of 330 metres, the organizer said. (Photo by Kim Kyung-Hoon/Reuters)

This picture taken on June 1, 2019 shows Alex Gao trying to balance a book on his head during an etiquette and manners class in central Shanghai. Against a soundtrack of classical music, children learn social skills, dining manners and deportment in the class, which costs $390 for four hours of practical instruction per student. (Photo by Hector Retamal/AFP Photo)

“Photocillin is the pseudonym of Dr Andy Teo, physician and people photographer based in the Surrey/Hampshire borders near London in the UK. My style is about showing the beauty of people and the world in which they live in a retro-utopian way”. – Andy Teo. Photo: “Walking six feet tall”. (Photo by Photocillin)

Reigning Miss Universe Pia Wurtzbach,second from right, watches beauty contestants during a media presentation at suburban Quezon city northeast of Manila, Philippines, Tuesday, March 29, 2016. Forty beauty hopefuls are vying for the coveted title that would represent the Philippines in the Miss Universe beauty pageant. (Photo by Bullit Marquez/AP Photo)

A colony of penguins gather with the Bark Europa in the background, on March 05, 2015 in South Georgia Island. An adventurer has documented his 5,000 miles journey aboard a 100-year-old ship, sailing from Argentina to Antarctica to Cape Town. (Photo by Andrew Orr/Barcroft Images)

Cardi B accepts the top rap song award for “I Like It” at the Billboard Music Awards on Wednesday, May 1, 2019, at the MGM Grand Garden Arena in Las Vegas. (Photo by Chris Pizzello/Invision/AP Photo)

Sad woman standing near car with scratch on parking and talking by the phone. (Photo by Vera Petrunina/Getty Images)