The Hidden Mountains of Mining Waste

Massive hills known as spoil tips are actually artificial mountains made entirely from discarded mining waste. Though often called slag heaps, they contain rock and debris rather than actual slag.

These towering piles are remnants of extraction processes that brought unwanted earth to the surface. Local names vary wildly, with people in Scotland calling them bings while others refer to them simply as mine dumps. While they might look like natural landscapes today, they are essentially massive, man-made monuments to industrial history. Transforming these barren heaps into green spaces is now a major goal for many former mining towns.