Club visit to Balmholz.
Switzerland · Lake Thun and Interlaken
Balmholz is a boat-only Lake Thun wall dive with limited visibility.
Balmholz is a boat-only Lake Thun wall dive with limited visibility.
Balmholz is a boat-only Lake Thun wall dive in the Bernese Oberland, best known for a steep face lined with big boulders and submerged branches. The site suits controlled freshwater boat drops more than casual shore diving, and divers should plan for tight buddy spacing, careful navigation, and a low-visibility profile rather than open-water sightseeing.
Site Conditions
Safety Notes
Use disciplined buoyancy, keep buddy contact close, and avoid over-committing in poor visibility.
Access Restrictions
Boat access only.
Community notes to help plan your visit.
Scuba Diving
Expect a controlled boat drop onto a steep face. Keep the wall in view and watch for branches and boulders on the descent.
Species commonly reported at this site, with direct links into their wildlife guides.
Research estimate
Research estimate
Research estimate
Research estimate
Research estimate
Last Updated
Research Sources
Club visit to Balmholz.
Public Balmholz site-card listing.
Official Lake Thun regional context; Balmholz quarry named on the route.
Freshwater condition page with visibility, current, and surge ranges.

Fischbalmen is a steep shore-entry wall dive on Lake Thun.