Ffridd Ddu Field System is an area of relict field boundaries and plough-marks, set on north-west facing slopes, comprising one of the best-preserved multi-period field systems in north Wales. The landscape can be associated with the following: substantial settlement with hut groups and enclosures at SH64377144 and further north can be found enclosures with long huts at SH64897173.

J.Wiles 2003.09.05; T. Driver, RCAHMW, 4th September 2008.