Naked and Afraid (2013)

S10E14 Don't Let the Jungle Bugs Bite

Steering clear of the perilous currents of a rushing river, two survivalists venture into an extensive cave network deep within the Colombian rainforest. As they strive to endure 21 days, the jungle challenges them with various dangers, including deadly fer-de-lance snakes, aggressive piranhas, and relentless biting insects.