| Castru Valnera | |
|---|---|
 Castru Valnera peak in 2017 | |
| Highest point | |
| Elevation | 1,718 m (5,636 ft) |
| Geography | |
 | |
| Location | Cantabria, Spain |
| Parent range | Montes de Lunada |
| Topo map |   |
Castru Valnera[1] (Cantabrian) or Castro Valnera (Spanish) is a peak located in the central area of the Cantabrian Mountains, in Burgos, northern Spain. It is around it that the whole Pas valley revolves, and also the source of the Miera River, between the Portillo de Lunada and Estacas de Trueba passes.
Castru in Cantabrian refers to an abrupt rocky peak.
- ^ Penny, Ralph (1969). "5/1". El habla Pasiega: Ensayo de Dialectología Montañesa (in Spanish) (1st ed.). Tamesis Books Limited. p. 204. ISBN 978-0-900411-05-2.
§204 San Roque de Riomiera: "[…] Montañas: Bernachu, el Castru Valnera, Cubulruyu, […]"