Its name comes from the La Bárcena stream and it refers to the plain and the fertile soil produced by this stream. If you look carefully to your right you may see the “Arboretu del Hoyucu”, a picnic place surrounded by several plantations of tree species such as the Quercus robur, Q. petraea. Q. Pyrenaica; Q.ilex, Q. suber, llex aquifolium, Fagus Sylvatica, Castanea sativa, Fraxinius excelsior, Acer negundo, A. campestre, A. pseudoplatanus, Tilia platyphyllos, Batula alba, Alnus glutinosa, Taxus baccata, Pinus sylvestris, Populus tremula, Sorbus aria y S. aucuparia.