The dolmen of La Morisca Nature · Nava de Francia, Sierra de Francia, Salamanca Image of Nava de Francia, not of the place itself. On the top of the hill a circular mound ten metres in diameter and half a metre high was located that could correspond to a megalithic tomb, next to the place called Casa del Tío Nava, which César Morán had already pointed out as a megalith. Photo: Rodelar (CC BY-SA 4.0) What to see and do in Nava de Francia