Trig pillars can be found on hundreds of hill tops and mountain summits all over Ireland. These concrete landmarks are part of Ireland’s map-making heritage. They form the invisible all-Ireland network of triangles on which the earliest detailed maps were based. Trig pillars were constructed at elevated positions offering unobstructed sightlines to other trig pillars. This makes them great places for long, wide views of Ireland, especially in November when it’s not too hazy and not too cold.
#NovemberTrigWalk
#NovemberTrigWalk