The Barranco del Infierno is a ravine located in the town of Adeje in the south of the island of Tenerife, Canary Islands, Spain. It is the second most-visited protected area on the island. A popular hiking trail leads through the ravine to the highest waterfall on Tenerife. Access to the gorge is controlled by a limitation of 300 daily visitors. It is not permitted to under-5s, and under-18s must be accompanied by an adult. Reservations can be done online.