Valderrama, Cubilla and Ranera Curiosity · Partido de la Sierra en Tobalina, Las Merindades, Burgos Image of Partido de la Sierra en Tobalina, not of the place itself. Three hamlets make up the seventy-five residents of this municipality of thirty square kilometres, the remnant of an old jurisdiction of the valley of Tobalina that was split into two town councils around 1857. Photo: Rodelar (CC BY-SA 4.0) What to see and do in Partido de la Sierra en Tobalina