We will meet at a meeting point to go to Los Dinamos National Park, a protected area of more than 2,429 hectares. We will start the ascent on the shore of the Magdalena River, the last living river in Mexico City. We will enter the forest on a 14 km walk enjoying lush vegetation, crossing the river, waterfalls, tunnels and remains of an old hydroelectric installation until we reach the Puerta del Cielo located at 3,550 m.a.s.l.