In the heart of Gran Canaria is the municipality of Valsequillo de Gran Canaria, this town hosts the Special Natural Reserve of Los Marteles . Here nature lovers can enjoy hiking trails that surround one of the most beautiful places in the archipelago, the Caldera de los Marteles.

The Caldera de los Marteles has an elliptical shape, with a diameter that exceeds 550 meters and a depth of 80 meters. The caldera was formed after the explosion of a volcano of the freomagmatic type when the magma came into contact with water at least a million years ago. The whole basin is a leafy area of cultivation, surrounded by spectacular landscapes and highlighted by the flat surface in counterpoint with the steep slopes.

The Caldera de los Marteles is located at an altitude of 1500 meters above sea level, bounded on the north by the erosive escarpments of the cliffs of Tenteniguada and south with the Barranco de Tirajana, also borders the backs of Temisas and collects the channel of the Barranco de los Cernícalos. You can see acebuchales, willow trees and threatened species like the wild tomato.

The Barranco de los Cernícalos is an intra-canyon type that originated and modeled by phonological flows that came from the eruptions of the Las Cañadas volcanoes. This ravine takes part of the municipal term of Valsequillo de Gran Canaria and it contains the Cueva de Los Cernícalos.

The importance of the ravine is due to the high ecological and landscape value, in it you could see the most impressive olive groves of the island as well as an important willow. The channel of the ravine runs throughout the year and there are countless hiking trails that run throughout the natural landscape.

Focusing on the Cuevas del Cernícalo, a set of alpendres-caves that are carved into the rock and that some farmers still use today. Some of these caves were naturally formed and others were dug into the rock by man, many of them have been found vestiges of the first settlers who inhabited the island, many were used for storage, others were qualified as homes and they were also They gave other uses as a place of worship or to keep livestock.