Join Hazen as he goes in search of a giant reticulated python in the Beung Kiat Ngong swamps, one of the Mekong region's great wildlife havens. Travel along as he takes the journey of a lifetime across the Mekong River Basin, facing remote jungle and flooded plains during the peak of monsoon season. Brand new episodes of Primal Survivor: Mighty Mekong, Tuesdays at 9pm, on National Geographic UK. | National Geographic UK

This is what 20 feet of snake looks like all curled up! The reticulated python is considered to be the longest species of snake in the world. The longest reticulated python on record was 33 feet long! | Bronx Zoo