lake from dam in a rocky terrain on highlands

europe portugal beiras estrela vacation travel tourist landscape bucolic countryside rustic bush meadow sward green tranquility hill mountain ridge highlands steep slope ground boulder stone flinty rocky sunny ravine deserted charming lake fresh water terrain thicket field clump rock pathway footpath hike trek crosscountry track trail trip parched panorama leafy dam covao dos conchos trails day serra highest range continental astonishing scenery