Balcón de Judas Nature · Guardo, Alto Carrión, Palencia Image of Guardo, not of the place itself. A natural viewpoint reached by the waymarked 13-kilometre wolves' trail, after passing the Fuente de la Salud; from its ledge one looks out over the Carrión valley and the foothills of the Sierra del Brezo. Photo: Alejandro Polanco (CC BY 3.0) What to see and do in Guardo