At its peak in the 1780s, Parys Mountain produced such vast quantities of copper that it dominated the global market and forced down prices.
The distinctive colors—ochre, purple, and orange—are the result of iron and sulfur minerals reacting with oxygen and water in the open pits.
Copper from this mine was widely used to sheathe the hulls of British Royal Navy ships, preventing wood-boring worms and barnacle growth.
The mine was so prolific that, for a time, a specific type of copper coin known as a 'Parys Penny' was minted and used as currency across Britain due to a national coin shortage.
The landscape is so alien and desolate that it has been used by geologists as an analog for studying potential mining environments on Mars.
Mynydd Parys, or Parys Mountain, is a former industrial copper mining site in Amlwch, Anglesey, characterized by its unique, multi-colored lunar landscape caused by oxidized minerals. During the late 18th century, it was the largest copper mine in the world, fundamentally impacting the global copper trade. The site features extensive open-cast pits, underground shafts, and deep red, orange, and yellow spoil heaps devoid of traditional vegetation. Visitors can walk through a surreal terrain shaped by centuries of extraction, which is now classified as a geological site of special scientific interest. Much of the site remains open access, preserving the remnants of industrial architecture like engine houses and stone walls.
The highest vantage point on the southern rim of the Great Opencast, looking north across the main basin.
Wear sturdy, waterproof hiking boots, as the ground consists of loose, uneven scree and sharp mineral deposits.
Bring a fully charged camera or phone, as the contrast of the landscape against the sky is unique.
Follow marked paths closely to avoid hazards like unfenced, deep vertical mine shafts hidden by vegetation.
Do not attempt to enter any fenced-off mine shafts or derelict structures, as they are structurally unsound and dangerous.
Keep dogs on a lead due to steep drops and unstable ground; stay strictly on marked paths.
