About
Seegrotte Hinterbrühl is a cave attraction in Hinterbrühl, a village in Lower Austria. Its main feature is an underground lake, which the site describes as the largest in Europe, sheltered inside a former gypsum mine.
What the visit is like
Visitors travel across the water by boat through caverns that are lit for the visit. The journey is the heart of the experience: the lake, the rock walls around it and the lighting together create a setting that feels quite unlike a typical sightseeing stop above ground.
Nature and industry in one place
The cave was not formed as a show cave. It grew out of a mine where gypsum was extracted, so the visit combines natural beauty with traces of that industrial past. Those who enjoy mining history, geology or unusual places will find the contrast between the still water and the mine workings especially interesting.
- Suited to visitors curious about underground landscapes and industrial heritage
- A boat-based route through illuminated caverns
- A distinctive stop for travellers exploring Lower Austria
Hinterbrühl lies in the countryside south of Vienna, so the cave pairs well with a day trip into the surrounding hills and villages of Lower Austria. Visitors planning a trip should check the current arrangements with the site before setting out.