Path of the Witches of Cansoles Activity · Guardo, Alto Carrión, Palencia Image of Guardo, not of the place itself. A 10-kilometre route that leaves from San Pedro de Cansoles and reaches the Cueva del Erro; it is one of the six family trails of Guardo laid out on local legends written by authors from the comarca. Photo: Alejandro Polanco (CC BY 3.0) What to see and do in Guardo