Former German coal mines give way to Europe's largest artificial lake system

What has long been one of the areas most affected by coal mining is changing its face. In eastern Germany, between Berlin and Dresden, the old lignite mines are giving way to a surprising landscape: a network of artificial lakes destined to become the largest in Europe.

This transformation is taking place in Lusatia, a region intensively exploited during the Cold War for coal mining. From the 1960s onwards, the huge craters left by open-cast mining were gradually filled with water. The first symbolic step in this project was the impoundment of the Senftenberg lake in 1967.

Today, this experiment has become a large-scale model: marinas, navigable canals, campsites and outdoor activities are entirely redesigning the area. Without human intervention, this area - characterized by sandy, permeable soils - would have remained virtually devoid of lakes. The Lusatian Lake District comprises of 23 artificial basins with a total surface area of around 14,000 hectares. The aim is to link at least ten of them via a network of navigable canals, creating a continuous area of over 7,000 hectares of water. Some connections are already operational, while others are under construction.

The figures testify to the scale of the project: up to 600 million euros for a single lake, around 7 billion already invested in Lusatia alone, and almost 14 billion if other German coalfields are included. But why is it so important?

From "brown gold" to sparkling waters

To understand the value of the "Land of the Lusatian Lakes", it's essential to remember the region's historical mainstay: lignite mining. Beneath the rolling Lusatian plains lay some of Europe's richest deposits of brown coal, locally dubbed "brown gold". For well over a century, from the 19th and even more so in the 20th, this resource sustained local economies, fueled industry, generated electricity and shaped entire communities.

However, this economic dynamism came at an environmental cost. Entire villages have been displaced or dismantled, water tables artificially lowered, forests and soils were disturbed, and huge open-pit mines scarred the land. By the mid-twentieth century, the image of Lusatia was one of industrial intensity and radical transformation, testifying to both human determination and the scale of the ecological impact.

German reunification in 1990 marked a decisive turning point for the region. With the evolution of federal environmental policy and growing global awareness of climate change and coal's carbon footprint, the German government and regional authorities phased out intensive lignite mining in Lusatia. As coal resources dwindled and environmental costs became impossible to justify, mining activity retreated, leaving behind an industrial landscape of pits, rubble and devastated land.

To date, this is a colossal undertaking that experts predict will take decades to complete. A key milestone will be reached in the summer of 2026: five lakes - Senftenberg, Geierswald, Partwitz, Sedlitz and Großräschen - will be linked to form a single navigable system. It will then be possible to travel dozens of kilometers by boat, while transport, marinas and visitor facilities will continue to develop over the coming years. Beyond their tourist appeal, these lakes will fulfil an increasingly crucial function: storing water and mitigating the effects of drought. They are filled by diverting water from local rivers, accelerating a process that would naturally take up to a century.

The Lusatia project goes far beyond the local framework: it's a concrete example of the transition from a fossil economy to a regenerated territory, capable of inspiring other European regions still dependent on coal. The mines still in operation will be gradually closed by 2038, and these gaps in the ground, once symbols of exploitation, will also become part of a new landscape. Where once we saw only craters and dust, today we see water, biodiversity and new economies, proving just how profoundly a territory can be transformed.

(©GreenMe.it 2026/Managing editor: Malvina Parker - The Global Nature/Picture: Andres Garcia via Unsplash)