 The iron-age Maes Knoll tump (2.5 kilometres to the east) and tumuli (in the field just north-east of North Hill Farm) are evidence of long occupation of the valley.The original settlements probably owed their existence to the quarrying of the local Dundry stone, which is found at Cardiff Castle and was used in mediaeval Bristol.Nearby Dundry, was originally a Roman fort built as part of the local defences against the invasions of the Anglo-Saxons.