Waterfalls of the Folón river Nature · O Rosal, Baixo Miño, Pontevedra Image of O Rosal, not of the place itself. Waterfalls set in the descent of the río Folón towards the valley of O Rosal, in the same channel that drives the stairway of flour mills; those of the río da Cal complete the concello's set of cascades. Photo: User Alma (CC BY-SA 3.0) What to see and do in O Rosal