Laacher See
Caldera lake in the Eifel with active CO₂ vents (mofettes) on the SE shore.
About this spectacle
Laacher See is a striking caldera lake nestled in the Eifel volcanic region of western Germany, formed by a massive eruption roughly 13,000 years ago. What sets it apart from a typical lake is the raw geological drama still playing out along its southeastern shore: carbon dioxide bubbles rise constantly through the shallow water from mofette vents, evidence that the volcano beneath remains geologically active. Visitors can watch the lake's surface fizz and churn at these venting points, a quietly eerie reminder that this landscape is very much alive. The lake itself is broad and serene, ringed by forested slopes and overlooked by the Benedictine Abbey of Maria Laach on its western bank. The combination of glassy water, wooded crater walls, and the persistent CO₂ bubbling creates a uniquely atmospheric scene — at once tranquil and subtly unsettling. Birdsong carries across the water, and on calm mornings the mist that settles in the caldera basin adds to the otherworldly quality of the place.
When to go
Year-round
Getting there
Nearest airport: CGN. Nearest city: Koblenz.
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