Evidence of activity in the Quantocks from prehistoric times includes finds of Mesolithic flints at North Petherton and Broomfield and many Bronze Age round barrows (marked on maps as "tumulus", plural "tumuli"), such as Thorncombe Barrow above Bicknoller. Several ancient stones can be seen, such as the Triscombe Stone and the Long Stone above Holford. Many of the tracks along ridges of the Quantocks probably originated as ancient ridgeways. A Bronze Age hill fort, Norton Camp, was built to the south at Norton Fitzwarren, close to the centre of bronze making in Taunton.