Floating on clear deep water and reflections near the cave entrance. Visitors can either bring their own kayaks or rent boats from the local community to paddle deep inside the cave and marvel at its wonders on March 2015 at Tham Khoun Ex, Laos. Tham Khoun Xe, commonly known as the Xe Bang Fai River Cave, in Laos, has over 15km of passages filled with awe-inspiring views and wide expanses of water. Photographer, John Spies, 59, captured scenes from the entrances of the huge underground river passages, intricate cave formations and views from a passage high above the water. The cave is formed by the Xe Bang Fai river, a major tributary of the Mekong and in the dry season can be traversed using inflatable kayaks. (Photo by John Spies/Barcroft Media/ABACAPress)

Raquel Poti poses for photographers during the “Amigos da Onça” street party on the second day of Carnival on February 10, 2024 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

A giant ham bread, a typical Venezuelan Christmas dish, is seen on a table during an attempt to break the Guinness World Record for the biggest ham bread, in Caracas November 15, 2014. The giant hallaca more than 120 metres long. (Photo by Carlos Garcia Rawlins/Reuters)

A dragonfly rests on a leaf in Hinojedo, Cantabria, northern Spain, 01 June 2023. (Photo by Pedro Puente Hoyos/EPA/EFE/Rex Features/Shutterstock)

Adrienne Yip takes a picture of her Burmese mountain dog named “Walter”, beneath the cherry blossoms in peak bloom at the Tidal Basin with the Washington Monument seen behind, in Washington, DC, USA, 18 March 2024. Peak bloom, as defined when seventy percent of the cherry blossoms are open, is occuring this week. This year's peak bloom, beginning the 17th of March, is tied for the second earliest in history and is seen as a reflection of warming temperatures. (Photo by Michael Reynolds/EPA/EFE/Rex Features/Shutterstock)

Split-view of a killer whale at sunrise off the coast of Northern Norway. At least half of the world’s killer whale populations are doomed to extinction due to pollution of the oceans, a new study says. (Photo by Audun Rikardsen/Science)

People are caught in a dust storm in New Delhi, India May 23, 2016. (Photo by Anindito Mukherjee/Reuters)

A model takes a picture of photographers outside the Anna Sui show at the Strand Rare Book Room in New York on February 10, 2024. (Photo by Jeenah Moon for The Washington Post)