Copper mining is probably the oldest known mining activity in Wales with documented evidence of Bronze Age mining on the Great Orme near Llandudno and at Copa Hill in the valley of the River Ystwyth in Ceredigion. Further copper discoveries were exploited in Snowdonia just to the east of Beddgelert where the Sygun Copper Mine, within the Snowdonia National Park, gives an idea of the conditions faced by copper miners and is a popular tourist attraction. In the 18th century the massive deposits of copper together with a range of other metals was discovered and exploited at Parys Mountain on Anglesey.