Barranco del Infierno from Adeje

The walk starts at the entrance to the Barranco del Infierno at the head of calle de los Molinos in Adeje, where visitors meet at their booked time and are given a helmet. A single mountain path climbs the ravine to the waterfall, which the Cabildo de Tenerife lists as the end of the route and reachable only on foot. Return the same way.

It is 6.1 km there and back with 250 m of ascent, the operator's figure for the gain; allow about 3 hours. The operator gives around 3 hours, 6.5 km and an elevation gain of around 250 m, of low to medium difficulty; the Ayuntamiento de Adeje gives 6.5 km there and back, about 3½ hours, medium-low; the Cabildo's page lists 3.00 km, a calculated 2 h 5 and 522 m of accumulated ascent, difficulty medium. The grade is Moderate on our count, as the time is 3 hours; the operator rates it low to medium (medium-low on its trail page), the Ayuntamiento de Adeje medium-low and the Cabildo medium, and none calls it simply easy.

Entry is only with an online booking for a set time. The operator lists 16 euros for a non-resident adult and 6 euros for residents of the Canary Islands; from 16 September to 31 May its home page lists access from 8:30 to 11:30, with the park closing at 14:30, while its trail page gives 8:00 to 11:30 and a 13:30 closing. The Ayuntamiento de Adeje's page says access is limited to 300 people a day, and the Cabildo's page says 20 people every 30 minutes in the morning. The helmet is compulsory and included, and the operator asks for closed shoes, no flip-flops or sandals. Children under 5 are not admitted, animals may not enter, and bathing, fires, smoking and canyoning are not allowed. The operator asks for 1 to 1.5 litres of water each.

The operator's rules say not to enter in windy or rainy weather because of the danger of landslides; it checks the trail every day before deciding whether it will open and emails visitors at 08:30 if it closes. The Cabildo's page lists no public transport and no parking spaces at the start; the operator's FAQ says there is a public car park a few minutes from the entrance, next to Casa Fuerte.

Route drawn by Global Adventurer along OpenStreetMap paths (© OpenStreetMap contributors, ODbL), with the distance and time worked out from it. The climb is the published figure: height data cannot be trusted on this ground. Check the forecast and the ground on the day: paths change.