The particular geographical characteristics provide the Esva gorge with a particular isolation, favoring the development and conservation of the native vegetation of the environment in an excellent degree of naturalness. Carbayedas (oaks), ashes and alders predominate in the forest of the canyon. The wall of riverside alders is so leafy that it keeps the subterranean tree submerged in a permanent semi-darkness of low light, conducive to creating the ideal habitat for hazelnuts, dogwoods, laurels, ivy, honeysuckle and various types of ferns. Slate, sandstone and quartzite, and to a lesser extent limestone and marble, make up the geological structure of the Hoces del Esva and provide an element of interest to the route from a geological point of view, but they are very slippery rocks when wet. The path runs through several sections of walkways and wooden stairs that go up and down the side of the canyon, sometimes along the riverbank and sometimes at a certain height in the steepest areas. The path passes through the ruins of an old dam and saves a rocky pass with exposure to the void protected by a rope handrail. Further on, the crossroads of trails appears with the variant that descends from El Cabanón.