Olives Sacred Lagoon and Xestoso Bogs are wetlands protected of mountain. They are situated about some 700 metres above sea level. Olives Sacred lagon constitutes a section of the Brañas de Xestoso (Xestoso Bogs), a space protected by the Natura Network.
About the vegetation, it is a broad bushy area with wet meadows with interesting bogs. The existing fauna is formed by a varied representation of amphibians and reptiles. You can also find eaglets, falcons, white eagles and seedeaters; besides mammals such as foxes and wolves.
There are legends referring to a battle against the Moors, in which there were many dead that were deposited in the lagoon, with a wall being built immediately afterwards so that it was not profaned. The lagoon has a seasonal character, being dry during the summer.