Going out the back of the abbey, they took a path into the woods

where they found a bridge across the river

and the Monk's Fishing House.

There is a hole in the middle of the floor of the house. The monks would set a net in the hole, and run a cord all the way up the hill to the abbey and attach it to a bell, which would ring when they had a bite.

Across the bridge was a gateway to a nature walk that leads to Ashford Castle.
As it happens, we weren't sure that the trail would lead us to the castle, so we backtracked and took the road there.