エスパシオナチュラルデラシエラデラデマンダでののおすすめ登山＆山歩きルート

The path leaves El Portillo on the east side, goes up a few meters along a channel and enters the north side. If the mountain has snow, this section is dangerous because the cold and shady conditions keep the path icy and the fall is fatal; crampons and ice axes would be essential. The alternative is to climb directly along the channel on the east face, with less slope, sunnier and direct to the summit of San Millán (2,131 m), also called El Torruco. At the top there is a small circular stone tower adorned with a metal house and other festival motifs left by mountaineers. The southern slope of the mountain is a large mass of gentle slopes with no remains of glacial activity towards the valley of the Arlanzón River. The descent continues along the west face, enjoying extraordinary views of the Urbión River valley and the glacial cirque where the San Millán lagoon appears half frozen.

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The Zarcia Recreational Zone is 2.8 kilometers from Santa Cruz del Valle Urbión along a dirt track suitable for cars, there are some potholes but with care they do not present problems. At the entrance to the picnic areas there is room for three or four cars and 150 meters before arriving there is space for many more. The route begins along the main path of the Urbión River valley, passes through a detour and after one kilometer the Altuzarra waterfalls path appears on the right, which is the return route. The path does not present orientation complications, it follows the course of the water to the head of the valley. In several sections you have to cross the riverbed or walk along the small islands that the torrent forms when there is a lot of flow, always among beech trees, holly trees, yew trees and the riverside scrub that seeks the humidity and wild environment of the glacial valley. Some reference points are the Refugio de Laguarra cabin and shortly after the crossroads where the Mirador de Domingo Sevilla trail leaves on the right, which is also a shortcut to get directly to the Altuzarra waterfalls without passing through the summit of the mountain. . On the opposite bank of the ravine is the “most famous beech tree in Burgos”, as indicated by a sign stuck on a stone near the monumental tree.

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The path runs along the edge of the glacial cirque of the Brava and Los Patos lagoons, maintaining the ascent to the west and connecting with the Sendero de las Lagunas PR-BU 203, marked with white and yellow wooden milestones. The top of the itinerary and of the Sierra de Neila is the vertex of Alto de la Campiña (2,050 m), also called Mojón del Muelle, the best place to appreciate the landscape of circuses, moraines, lagoons and glacial steps modeled by Quaternary ice a thousand years ago. The views are extraordinary, on clear days they reach the silhouette of the Central System. The path continues along the edge of the large glacial niche where the floating peat bogs of the Larga and Negra lagoons are located, the main representative of the environmental values of the natural park. In 1970, works were carried out that determined the appearance of the current landscape, raising huge siltation slopes in the glacial cirques and opening access roads to facilitate the entry of nature tourism at the time, which mainly sought bathing and fishing in the lagoons. Later, with the declaration of the natural park, some previous works were reformed, eliminating a lot of artificial material to recover the natural ecosystem of the mountain environment. The path surrounds the cirque, passes through the Pico de la Laguna (2,004 m) and descends the lateral moraine following the milestones of the Sendero de las Lagunas towards the Laguna de la Cascada along the Tejos path. There is another path that is also signposted and goes to the right, going directly down to the cirque of Laguna de la Cascada.

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