I don't know where this can refer to. Perhaps someone reading will know. The folklore is just what you'd expect for a prehistoric site.
Gentlemen - Some few years ago I was travelling on a coach between Chepstow and Abergavenny, when my attention was drawn to some large stones lying prostrate on the right hand side of the road, but on which side of the town of Usk I cannot now remember.
.. I found that in the eyes of the coachman, and also of the whole neighbourhood, they were considered rather as a lion, not on account of being Celtic remains, but because it had required the united force of the farm-horses of the neighbourhood to pull them down, and that they could not even then remove the disunited masses from the spot.
Thanks, Mr Richard GP Minty for your vagueness. Perhaps the stones have gone now anyway? But you never know, especially if they were that stubborn.
from 'Archaeologia Cambrensis' v II (1847), p 275.
Park next to the houses and there is a footpath which runs past the houses. This leads you into the start of the trees and then it's make your own path up through the trees to the summit. The whole hill is covered by ivy (I have never seen so much) and I only noticed faint traces of defences. No view to be seen from the top due to all the trees. To be honest not much to recommend a visit. Just as well to view it from the M4!!
This can be tricky to find as when you get to the top of the hill the stones are not visable. Once at the top, take the path along the ridge to your left (when looking at the River Severn). As you walk along the path you will see the two Severn Bridges. Head 'off track' roughly between the two bridges until you see the outliner. Harder to spt in the summer due to the masses of bracken.