Vietnam’s Son Doong cave, the largest in the world, could hold a 40-story skyscraper inside. The pristine ecosystem has its own river and jungle. Despite its size, Son Doong wasn’t discovered until 1991. It was lost again for nearly two decades and was fully explored for the first time in 2009. (Photo by Jason Speth/HuffPost)
An endangered desert bighorn lamb leaps in play at a park where bighorns are tempted to leave the safety of their native habitat to eat grass and drink water in the summertime on August 9, 2023 near Indio, California. (Photo by David McNew/Getty Images)
American reality show contestant Courtney Stodden is caught kissing a mystery woman on the beach in Santa Monica, CA on September 16, 2016. Courtney and the mystery brunette couldn't keep their hands of each other and didn't seem to care who saw their antics as they frolicked on the sand. (Photo by Canham/Splash News)
German-American model and television personality Heidi Klum is seen on February 19, 2019 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
Participants wearing costumes take part in the West Indian Day Parade in the Brooklyn borough of New York September 1, 2014. The parade, which draws a crowd of a million plus, celebrates Caribbean culture. (Photo by Eric Thayer/Reuters)
David Goffin of Belgium meets a koala during a promotional event for the Australian Open tennis tournament at Melbourne Park on January 17, 2018. (Photo by Fiona Hamilton/Reuters/Tennis Australia)
An armed forces members patrol during an operation against drug dealers in Vila Kennedy slum in Rio de Janeiro, March 7, 2018. (Photo by Pilar Olivares/Reuters)