Technical information Start: La Esperanza Finish: La Caldera Approval status: In progress Degree of difficulty: Very high Type of trail: Linear Distance: 29.8 km (12.89 ft) Duration: 14 hours 20 mins Highest altitude: 1,819 m (12.89 ft) Lowest altitude: 915 m (12.89 ft) Elevation gain: 1,853.18 m (12.89 ft) Elevation loss: 1,568.18 m (12.89 ft) Links to other trails: GR 131 Anaga - Chasna. Stretch: La Caldera Recreation Area - El Portillo PR TF 35 Mamio - Pinolere Protected Nature Areas: Protected Landscape of Las Lagunetas Corona Forestal Natural Park Authorisation required: No Trail description This GR trail sets off from the town of La Esperanza. If you walk through the woods of El Adelantado and along Calle Grano de Oro, you will come to the El Rayo track. Follow it to the track of Las Barranqueras and join that track to Cruz de Fune. The trail then alternates stretches of forest tracks and footpaths until you come to the Siete Fuentes resting area. After that, get ready for a tough climb. Once you reach the highest altitude levels, the trail guides you around ravines under the shade of the pine trees to a forest track, which takes you to El Portillo del Topo. There, it joins the short trail of PR-TF 35 Mamio Pinolere to reach the La Caldera Recreation Area. If you plan on camping, you can apply for authorisation to camp at the Recreation Area of La Caldera on www.tenerife.es. Hypsometry For your own safety, don't forget to check the condition of the trail. The competent authority will be responsible for informing you if the trail is not recommendable in the wake of adverse weather conditions, as well as if the trail or part of it is closed, etc. Competent authority: Tenerife Council About the competent authority: GR 131 Anaga - Chasna. Stretch: La Esperanza - La Caldera Recreation Area In case of an emergency, call 112. Download FRESS 112, available for iOS and Android