Parys Mountain () is located south of the town of Amlwch in north east Anglesey, Wales. It is the site of a large copper mine that was extensively exploited in the late 18th century. Parys Mountain is a mountain in name only, being a hill with an elevation of less than 150m. History Parys Mountain was mined for copper ore in the early Bronze Age, as shown by sub-surface debris nearly 4,000 years old revealed during excavations in 2002. Since then access has been regained to the sealed underground workings of the Parys mine, revealing further evidence of ancient mining. Parys Mountain is thus one of the few sites in Britain where there is evidence for the prehistoric beginnings of the British metal mining industry. The 18th century miners recognised that they were following in the steps of much earlier workers, an observation that was then linked to the discovery locally of copper ingots bearing Roman inscriptions. In 1764, Charles Roe of Macclesfield was granted a 21-year lease by the Bayly family to work the mountain for copper. Rowland Pugh, a local miner, discovered the "Great Lode" on 2 March 1768 and was rewarded with a bottle of whisky and a rent-free house for his lifetime. Although the ore here was of low quality, this was more than compensated for by the fact that it occurred in two large masses close to the surface. Initially ore was worked on the surface from shallow shafts, next by open-pit mining, and finally underground from adits or shafts. The ore was broken into small lumps by hand, the best ore being shipped to Lancashire or to the Lower Swansea valley in South Wales through the port of Swansea for smelting. Copper was concentrated and extracted from the remainder using kilns and furnaces on site. It was also discovered that purer metal could be obtained efficiently, although in small amounts, by its precipitation from drainage water with scrap iron in purpose-built ponds. Associated with the mines, important chemical industries were established on the mountain based on by-products such as ochre pigments, sulphur, vitriol and alum. The processes were described by the German writer and translator Augustin Gottfried Ludwig Lentin (1764–1823), who visited Parys Mountain in the 1790s and published his findings in Briefe über die Insel Anglesea: vorzüglich über das dasige Kupfer-Bergwerk und die dazu gehörigen Schmelzwerke und Fabriken (Leipzig: Crusius, 1800). Parys Mountain