A complex of channels is depicted to the north of Clovenrocks Bridge on the Ordnance Survey 1st Edition mapping of 1891. [1] The channels are centred at SS 7861 3992 and are generally as depicted in 1891. They are well defined and form a roughly rectangular system of ditches 0.9 metres deep and 2.6 metres wide. Their purpose and date is unclear, but they seem most likely to be associated with drainage activities, and as such may be contemporary with agricultural improvement in the area in the 19th Century. [1, 2]