Rowers during Cambodia's annual water festival on the Tonle Sap river in Phnom Penh, Cambodia, November 10, 2019. /VCG Photo

The annual water festival, or Bon Om Touk, celebrates the reversal of the flow of water in both the Mekong River and the Tonle Sap after the monsoon season when water levels subside, allowing the start of fishing. /VCG Photo