Arrival of the bison in the Montaña Palentina Historical milestone · San Cebrián de Mudá, Montaña Palentina, Palencia Image of San Cebrián de Mudá, not of the place itself. On 4 June 2010 seven bison brought from Poland were released into the enclosure; two of the females arrived pregnant and their calves, named Ciprés and Cipra, were the first born in the mountains. 4 de junio de 2010 Photo: David Perez (CC BY 3.0) What to see and do in San Cebrián de Mudá