Don't let this tip go to waste: Hike back into industrial history atop Saarland's coal heaps
In 2016, a local mining heritage preservation group built The Saar Polygon, a metal structure perched atop the Duhamel spoil tip of the former coal mine in Ensdorf, Germany. This colossal mound, which sprawls across roughly 125 acres and soars about 500 feet above the surrounding Saar valley, tells the story of the region’s history of coal mining.
Source: stripes.com