A woman walks at the Boulevard of the River the eve of the International Women's Day, in Cali, Colombia, 07 March 2019. (Photo by Ernesto Guzman Jr./EPA/EFE)

A Hindu pilgrim takes a holy dip at Sangam, the confluence of Ganges, Yamuna and mythical Saraswati rivers during the Maha Kumbh Mela festival in Prayagraj on February 5, 2025. (Photo by Idrees Mohammed/AFP Photo)

A highland cow grazing high above the River Tweed at Thormylee in the Scottish Borders strikes a formidable pose in the morning light on May 3, 2023. (Photo by Phil Wilkinson/The Times)

A woman in the Sabean Mandaean community takes part in a ritual during the Prosperity Day celebration in the Tigris River in central Baghdad, Iraq, Tuesday, November 1, 2022. (Photo by Hadi Mizban/AP Photo)

Naga Sadhus, or Hindu holy men, participate in the procession for taking a dip in the Ganges river during Shahi Snan at “Kumbh Mela”, or the Pitcher Festival, amidst the spread of the coronavirus disease (COVID-19), in Haridwar, India, April 12, 2021. (Photo by Danish Siddiqui/Reuters)

A boy catches a trout while ice fishing on a frozen river during a fishing contest in Hwacheon, South Korea, Saturday, January 14, 2017. The contest is part of an annual ice festival which draws over 1,000,000 visitors every year. (Photo by /Ahn Young-joon/AP Phot)

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)

A crustacean walks on a road after flooding went back in Schuld, Germany, Friday, July 16, 2021. Two days before the Ahr river went over the banks after strong rain falls causing severals deaths and hundreds of people missing. (Photo by Michael Probst/AP Photo)