Pulvermaar, Volcanic lake in Gillenfeld, Germany.
Pulvermaar is a volcanic lake in Gillenfeld featuring a circular basin surrounded by steep funnel-shaped sides. The water reaches depths of around 72 meters across a diameter of roughly 700 meters.
This lake formed during the last ice age roughly 20,000 to 30,000 years ago when magma encountered water-saturated rock layers. The explosive interaction created the funnel-shaped depression that now holds water.
The lake draws swimmers and boaters throughout the warmer months, serving as a favorite retreat for locals and visitors seeking water-based recreation.
The lake has a designated swimming zone with changing facilities and a beach area on the eastern shore, where a café with a terrace offers refreshments. Boat rentals are available on-site for those interested in exploring the water.
At roughly 72 meters deep, this lake ranks as Germany's deepest maar lake. Its ridge walls display alternating bands of coarse slate fragments and fine ash, revealing the layered history of its volcanic formation.
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