In eastern Germany, enormous pits carved by decades of lignite mining are being transformed into a vast network of lakes, wetlands and restored land. The Lusatian Lakeland, spread across Brandenburg and Saxony between Berlin and Dresden, is being created by flooding former open-cast mines and reshaping their surroundings. The tourist destination now comprises 23 post-mining lakes covering about 14,000 hectares of water.
The transformation began with Lake Senftenberg in 1967 and has continued for decades. The first step started when the former Niemtsch open-cast mine began filling to create Lake Senftenberg. Flooding was completed in 1972, and the lake opened for public use the following year. Since then, numerous other mine pits have been flooded, creating what regional authorities describe as Europe's largest artificial water landscape. The process has used both groundwater and water brought in from rivers and other sources. According to mining-rehabilitation company LMBV, rapid flooding of some mine voids was necessary because the enormous quantities of removed material left depressions that could not simply be restored to their original form.
The Lusatian Lakeland is not a single giant lake but a collection of former mining sites gradually being integrated into a connected water landscape. Five of the most prominent are Senftenberger See, Geierswalder See, Partwitzer See, Sedlitzer See and Großräschener See. In 2025, Sedlitzer See reached its planned water level. At about 1,400 hectares, it has become the largest recreational lake in the region.
The transformation extends beyond individual lakes. On June 29, 2026, five major lakes were officially connected through navigable waterways, creating a continuous water area of roughly 5,100 hectares. LMBV says the wider plan involves 13 navigable canals, of which four have been completed. Mining rehabilitation has also stabilised former slopes and allowed young forests, grasslands and wetlands to establish across previously disturbed areas, turning the region into a functioning post-mining environment.
Source: Hacker News · Summarized by HeadlinesBriefing