Evidence of human activity in the area, dating to at least the Neolithic period, exists in the form of ancient flint tool and arrowhead discoveries. Rochdale Museum hold an early Iron Age bracelet made of a shale from Kimmeridge in Dorset, which was found in 1929 on Flint Hill, east of Blackstone Edge. A torc (or necklet) with ornamentation of a late-Celtic design was found in the Mawrode area of Littleborough in 1832; and the name Calderbrook is derived from an ancient Celtic language, two factors implying inhabitation by Britons.