Went for a nice walk, lovely and quiet even on Good Friday
there is parking by the war memorial in Bwlch gwyn. It is on the corner, about 250m from the pub that you pass on the left coming from Wrexham
nant y ffrith waterfall
if you look on Google maps, you can navigate to the waterfall and caves.
I don’t personally recommend it, you have to go over a fence or past a no entry sign. Dodgy with kids or on your own