Harrow Hill, West Sussex

A Neolithic flint mining site on the South Downs in West Sussex, England, about 5 km north of Angmering. The mine occupies approximately 8 hectares on the crown of the hill, with about 245 shafts and pits, the largest 19.5 m in diameter and 1.8 m deep. An estimated 350 tonnes of chalk were excavated from these shafts for flint extraction and trade. The Worthing Archaeological Society examined the mines in 1924 under Elliot and Cecil Curwen, and again in 1936 under George Holleyman. A Bronze Age Martin Down-style enclosure was also found on site, with pottery sherds from about 600 BC and skulls of 50-100 oxen. Harrow Hill is part of the densest cluster of Neolithic flint mines in Britain, alongside Cissbury, Blackpatch, and Church Hill.