The Bog Meadow is an amenity area near Enniskerry village. As well as sports fields and tennis courts, there is a loop walk laid out through the forest. Along the southern edge of the Bog Meadow is the wooded glen of the Cookstown River (also known as the Glencullen River), a tributary of the Dargle River, which flows down through Knocksink Wood and under a high arched road bridge (Knocksink Bridge). When it was built in 1859 it was Ireland’s highest bridge, an amazing feat of engineering at the time.
The cache is at a wooden platform with a view of the bridge and the river gorge - you don't have to go near the edge to find the cache but some care may be needed if the ground is slippery.