sentences:  Its slopes are most noticeable and its peaks very high (Castro Valnera at 1,707 m over sea level).The valley occupies partially or totally the municipalities of Soba, San Roque de Riomiera, Miera, Liérganes, Riotuerto, Medio Cudeyo and Ruesga (Calseca enclave).In its morphology are remarkable the sandstones and limestones, and the vast deposits of debris originated by ancient moraines from glaciers in its highest part.