See im Berg (Messinghausen)
The 'See im Berg' is a former diabase quarry near Brilon-Messinghausen in the Sauerland, abandoned in 1984 and filled only by rainwater. It is about 45 m deep and usually very clear, often with more than 10 m of visibility. The base has placed a small van, a caravan, a pioneer boat, containers and swim-through pipes, plus platforms at various depths. Access rules are strict: the site is aimed at experienced and technical divers.
Tiefe: 0–45 m