At the point where the Río Arlanzón joins the entrance to the swamp we find a red wooden bridge that helps to cross the meanders of water that the river has created over the years.
A curious name for this peak near Campo de los Corros. There's no mailbox, but there is a large pile of stones. One of the descent/ascent trails to Pineda de la Sierra begins here.
The Cubillejo/Mazariegos dolmen is considered the prototype of the megalithic passage tomb and preserves, on one of the large stone blocks that form its structure, a series of interesting rock carvings.