A quarry with two inroads enhanced to create docks (see also NPRN 410612 and 518795). The western inroad extends for some 100m with possibly a dredged channel extending some 80m. The warping area at the northern end is some 35m wide.The eastern inroad doglegs to a small square dock 23m x 15m. The dredged (?) channel for this dock is some 98m in length. Between the two is another berth, possibly a waiting berth for the western inroad, where 'Dock' is marked. This berth measures some 50m x 8m. The quarries went out of use in the early 20th century and are now masked by tree cover. The channels and berth are still well-defined.
