This dive site, Blausteinsee in Eschweiler, Germany, is renowned as one of the most prominent deep dive sites within North Rhine-Westphalia. It is well-equipped with numerous training platforms set at various depths, making it an excellent location for divers of all experience levels to practice and refine their skills. The lake has been intentionally enhanced with a variety of sunken objects, including a sailboat, truck cabins, and bicycles, providing diverse exploration opportunities. Divers must adhere to local diving regulations, and a comprehensive diving map is available online to aid navigation.
The marine life at Blausteinsee is not its primary attraction; the site description explicitly states there is "Not much fish life." Therefore, divers should not anticipate encountering a wide array of fish species or extensive aquatic flora. The underwater environment focuses more on the artificial structures and the training facilities rather than natural biodiversity.
Blausteinsee is suitable for year-round diving, although colder temperatures in winter months would necessitate appropriate dry suit gear. It offers an ideal environment for divers to conduct training, explore the unique sunken objects, and enjoy the variety they provide. Freedivers can also make good use of the diverse depths and training platforms available for breath-hold diving practice.

