Nests built in 1937 by the Republican army, as part of its attempts to establish a siege to the Asturian capital, in the hands of the nationals since the beginning of the civil war. These are concrete structures, with a circular shape, in which several loopholes are opened to control the environment.

Nidos de ametralladora
- Stage 1: Oviedo/Uviéu-Grau/Grado, The Original Way
- La Florida