The Tumular Complex of Quintana de Toranzo, located at the foot of the aforementioned Mount Tejas and immersed in the Pas Valley, is made up of four known structures and was discovered in 1986 by members of the Department of Historical Sciences of the University of Cantabria .
The Quintana III
Very similar to the previous one in terms of its plan, with a diameter of 21.5 meters on its North/South axis and 20.80 meters on its East/West axis. It is slightly lowered, being its maximum level in the East with 2.40 meters high.
Source: regiocantabrorum.es/publicaciones/junto_tumular_de_quintana_toranzo