The photographs below are in sequence from the western (Pallas) end towards the eastern (Mallow) end, along the N72. I am not at all certain about the two ends, and I would be glad to hear from anyone who can help to clarify matters.
The Blackwater comes close to the road
Looking back west: I think this is Pallas
The first of several entrances on the north side of the road
Another entrance …
… with what might just possibly be a trace of the canal
Just beyond this culvert …
… is what might be a ditch – or a canal
Then the real gem …
… which is this bridge and gatehouse
The arch from the side
The arch from the centre
Looking along the bridge
What was this for?
Near Rose Cottage …
… is more declivity
And at Waterloo House …
… there is even water!
You can just about see the bridge arch through the leaves
At a back entrance to Longueville House (a splendid hotel) …
… there’s water again
And then we come to the lock
The building of this underpass under the N72 shortened the lock
Looking down into the lock 1
Looking down into the lock 2
Some of the stonework 1
Some of the stonework 2
The stonework seems to have been cleaned up when the roadworks made the lock visible. But the timber growing in the lock needs to be cleared out, I think.
Taken from the bottom of the lock 1
Taken from the bottom of the lock 2