Mount Wellington Tailings Dam, this is the area of the Wheal Maid valley at Gwennap that was used by during the 1970-1980’s to hold the waste from the mine mill. The waste was usually stored due to the fact that technology is always improving, so the material could be re-treated in the future should the processing techniques allow it.
The colours here can be spectacular with vivid reds and yellows in the water and surrounding earth created by the minerals still held within the waste. The water within the tailings dam is contaminated with a variety of substances: arsenic, cadmium, chromium, copper, zinc, lead and nickel. This makes a rather unpleasant soup that should be avoided.
These images were taken in 2013, I will perhaps go back and take a digital image to show the colours around the dam.