It is categorized as a dry and water-filled maar complex, part of the West Eifel Volcanic Field.
The maar is situated directly on the boundary between the Schalkenmehren village and the surrounding crater rim hills.
The water quality is frequently monitored due to its status as a popular natural swimming destination.
During winter, the lake surface has historically been known to freeze, though climate fluctuations have made this less predictable.
The basin’s unique microclimate supports vegetation patterns that differ significantly from the immediate surrounding plateaus.
Schalkenmehrener Maar is a volcanic crater lake located in the Eifel region of Germany, part of a triplet of maars alongside the Weinfelder Maar and Gemündener Maar. The lake basin formed approximately 20,000 to 30,000 years ago due to volcanic phreatomagmatic eruptions. It spans about 21 hectares with a maximum depth of 21 meters. The perimeter features a well-maintained circular trail that transitions between forested sections and open meadows. The lake is one of the few maars in the region that allows for swimming, with a dedicated lido area on the southern shore. The surrounding landscape consists of Devonian bedrock covered by volcanic tephra deposits. The site serves as a vital habitat for various waterfowl and protected aquatic plant species.
The elevated viewpoint on the northern crater rim, looking south toward the village and the water.
Bring polarized sunglasses to better observe the aquatic life in the clear, shallow areas near the shore.
Follow the marked 'Maare-Pfad' trail to connect this lake with the neighboring Weinfelder Maar.
Pack footwear suitable for uneven, muddy forest paths if planning to walk the full perimeter.
Do not attempt to swim outside of the designated lido area to avoid damaging sensitive shoreline ecosystems.
Use designated waste bins for litter; keep dogs on a leash in marked nature reserve zones.
