This dive site is Gottlieben Zollboothaus, a challenging freshwater location in Switzerland. It is exclusively accessible for diving during the winter months, outside of the cruise season, due to its unique conditions. Divers must navigate strong currents, which necessitate an advanced skill level, with an emphasis on maintaining depth control around 23 meters. The name 'Zollboothaus' suggests its proximity to a former customs house, hinting at the historical significance of this location on Lake Constance.
The marine life encountered here primarily consists of freshwater species adapted to the lake environment. Divers can expect to observe pike and perch (known locally as 'egli'). While specific plant life isn't detailed, typical temperate lake flora would likely be present, providing habitat for the fish.
The best time to visit Zollboothaus is strictly during the winter months, when conditions align for diving and cruise traffic is absent. Divers should be prepared for cold water and strong currents, making dry suits and proper weighting essential. This site is not recommended for beginners or freedivers due to the challenging conditions and depth requirements, with a maximum depth of 22 meters and an average of 11 meters.
