Just a few minutes from the post bus stop in Unterwasser, it's accessible on a flat path. A beautiful gorge awaits. Along the way, there's a barbecue area on the banks of the Säntisthur.
Barbecue area, two benches, deck chairs (only available at certain times), jetty into the water. You can walk around the lake – it should also be doable by bike. Idyllic with a view of Altmann/Säntis.