Trefil Quarry North was a limestone quarry, now disused. The quarries to the north are centred on SO 117140 and preserve a series of early tramroad lines. Aerial photography under parched conditions on 13th August 2003 revealed the positions of buried sleepers.
See NPRN 403799 for a tramroad in the southern part of the quarry.

T. Driver, RCAHMW, 2005.11.30