Wikipedia
Trasmiera ( Spanish: Trasmiera; Cantabrian and historically: Tresmiera) is a historic comarca of Cantabria ( Spain), located to the east of the Miera River (tras Miera, meaning behind Miera, from the point of view of Asturias de Santillana), reaching the western side of the Asón. It extends between the bays of Santander and Santoña, occupying most of the Eastern seaboard of Cantabria. This piece of coast is known for its cliffs and fine beaches, such as those of Langre, Loredo, Isla, Noja and Berria. Towards the interior, the comarca offers large prairies as well as considerable hotel and camping development.
It is subdivided into the municipalities of Argoños, Arnuero, Bárcena de Cicero, Bareyo, Entrambasaguas, Escalante, Hazas de Cesto, Liérganes, Marina de Cudeyo, Medio Cudeyo, Meruelo, Miera, Noja, Ribamontán al Mar, Ribamontán al Monte, Riotuerto, Santoña, Solórzano and Voto.