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Wheal Anna Maria – a copper and arsenic mine – covered 3.2 hectares and had over 6,850 cubic metres of arsenic flues! It was named after the Duchess of Bedford! Her main workings were on the ‘Main Lode‘ (the largest sulphide deposit in southwest England). When its rich copper waned, Devon Great Consols became the largest arsenic mine in the world because the margins of the copper-rich lode were dominated by arsenopyrite. In 1860 the copper lode at Anna Maria was up to 45 feet wide and yielding up to 80 tons per fathom, but by around 1880 the copper boom was over. Thankfully, arsenic production sustained the mine into the 1900s, until the company folded. Arsenic ore, unlike copper ore, was refined on site using the ‘calcination’ process – and at Wheal Anna Maria they yielded over 72,000 tons of refined arsenic! – Whoop!

Nice spot to take a break and enjoy the views

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Once the ancient capital of Cornwall, Launceston is a market town with steep sided hills. It is often thought of as the gateway to Cornwall.

Area of coniferous woodland, near Tavistock, situated on the banks of the river Tamar. The woods are home to plenty of hiking and bike trails, and offer plenty of scope for exploration.

Once the ancient capital of Cornwall, Launceston is a market town with steep sided hills. It is often thought of as the gateway to Cornwall.

Launceston Castle was built shortly after the Norman Conquest in 1068. It's towering position high above the town means it can be seen from miles around. Launceston was once the capital of Cornwall but when this was changed to Bodmin, the castle fell into disrepair. It was used as a jail and then to host assizes, courts held in county towns presided over by a visiting judge.

Wheal Anna Maria was originally a copper and later an arsenic mine. The biggest arsenic mine in the world. The ruins you can see are from the arsenic calcining complex where the arsenic-ore was crushed then roasted (calcinated). The white powder of arsenic would coat the walls of the flues and be scraped off by men and children. They were protected from the extremely toxic poison only by cotton wool in their ears and noses and rags covering their mouths! They even had to scrape the white powder off their boots before going home.