Parkplatz in Lake Thun offers a freshwater wall and reef experience suited for intermediate divers. The site features a steep profile descending from 20 to 40 metres, with an average depth of 25 metres. Visibility typically ranges between 5 and 15 metres. Entry is via the shore, and the lack of current makes navigation straightforward. Due to the significant depth and cold water, which can drop to 4°C in winter, thermal protection such as a drysuit or a 7mm wetsuit is essential. Divers should monitor their depth closely to manage the risk of nitrogen narcosis and account for increased air consumption in cold conditions.

Neuhaus Swimming Steps provide shore access to a shallow, rocky shelf at the eastern end of Lake Thun. This site is suitable for beginners, offering a depth range of 1 to 2 metres with an average of 1 metre. Snorkellers can expect mild currents and visibility typically ranging between 5 and 15 metres. Water temperatures are cool, measuring 8 to 12°C in April, and may remain low even during summer months. Due to the cold water, extended exposure can cause discomfort, and water shoes are recommended for the rocky entry. Facilities at the site include parking, toilets, showers, and changing rooms.

Baetterichhoehle is a shore-entry freshwater dive site located in Lake Thun. The topography consists of deep water, with depths ranging between 60 and 80 metres. Divers should expect visibility of approximately 5 metres, which requires careful navigation. The site is characterised by an absence of current, assisting with buoyancy control during the descent and ascent. Given the significant depth, this site is intended for experienced divers with appropriate technical certification. Divers are advised to check locally for facility availability and site conditions before arrival, as these can vary.

Wasserfall is a shore-entry wall dive located in Lake Thun, Switzerland. The site features a wall structure that descends between 20 and 40 metres, with an average depth of 30 metres. Visibility is consistently 10 metres, and the absence of current allows for a controlled dive profile. Due to the depth and cold water temperatures, which can reach 4°C in winter, this site is suited for intermediate divers. Thermal protection such as a drysuit or thick wetsuit is recommended. Divers should monitor their proximity to the wall to avoid entanglement. Species recorded around this area include snail, common perch, burbot, barbel, and American crayfish.

Balmholz is a freshwater wall and drop-off site located in Lake Thun. The topography features a steep wall descending to a depth of 30 metres, suitable for intermediate divers. Navigation is straightforward due to the mild current, though divers must remain aware of variable visibility, which typically ranges between 5 and 15 metres. Cold water temperatures persist year-round, making a dry suit or heavy wetsuit essential for this alpine dive. Access to the site is exclusively by boat, which must be arranged prior to arrival. Typical dive times are approximately 40 minutes.

Gipsunion is a freshwater reef site located on the shores of Lake Thun in the Bernese Oberland. The topography features a distinct reef structure punctuated by unusual underwater igloos. Divers can expect visibility ranging from 5 to 10 metres with no significant current. The site reaches depths between 20 and 40 metres, making it suitable for both beginners in the shallower sections and experienced divers looking for deeper profiles. Access is via a simple shore entry. Due to the cold water temperatures, a drysuit or a thick wetsuit with hood and gloves is strongly recommended for all divers.

Nastel is a freshwater shore-entry site in Lake Thun featuring both reef and wall topography. Divers can explore a vertical wall structure that descends from 8 to 46 metres, with an average depth of 15 metres. Conditions include mild currents and visibility ranging from 5 to 15 metres. Due to the cold water, which fluctuates between 10°C and 18°C, thermal protection such as a drysuit or thick wetsuit is essential. The site is suitable for intermediate divers who should be prepared for variable visibility. Parking is available at the site, facilitating straightforward gear transport for shore entries. Typical dive times are approximately 40 minutes.

Kleine gelbe Wand is a shore-entry wall and reef dive located in Lake Thun. The site features a wall structure that descends into depths between 20 and 40 metres, with an average depth of 30 metres. Visibility is consistently around 5 metres, making a torch useful for observing details on the wall face. There is no current, allowing for a methodical dive along the structure. Species recorded around this area include snail, common perch, burbot, American crayfish, barbel, bullhead, and pike. Divers should arrange air fills and equipment in advance as facilities are not confirmed on site. This site is suitable for intermediate divers comfortable managing depth limits.