On the slopes West of the peak Cebollera, There is a dehesa boyal which keeps one of the botanical relics that still remain in the region of glacial times.

He is considered one of the most beautiful forests of the community of Madrid, Since its huge variety: Holly, Robles, Cherry trees, Hazel, Serval and, above all, Birch, make this a spectacular place, especially when it comes the autumn and the contrasts of colors between the different species are more patents.