The PR-G 250 Water Route trail Activity · Zas, Terra de Soneira, A Coruña Image of Zas, not of the place itself. An approved itinerary that follows the watercourses of the concello among waterfalls, mills and riverside woodland. It is complemented by the PR-G 270, likewise laid out beside the rivers of the valley of Soneira. Photo: Javier Pais (CC BY 2.0) What to see and do in Zas