The lake serves as a water source for the nearby Appenzeller Alpenbitter distillery, which uses mountain water in its herbal liqueur production.
The Seealpsee is a natural geological dam formed by a massive rockslide from the surrounding mountains.
Despite being a high-altitude alpine lake, it reaches temperatures of up to 20 degrees Celsius in mid-summer.
The mountain huts at the lake produce and sell artisanal alpine cheese, specifically Appenzeller cheese, during the summer grazing season.
Local geology includes significant cavern systems, with several cave entrances located in the surrounding cliffs above the water.
The lake has a surface area of approximately 13.6 hectares.
Seealpsee is an alpine lake situated at 1,143 meters above sea level within the Alpstein massif in the Appenzell region of Switzerland. It is framed by the peaks of Säntis and Altmann, which are reflected in its clear, deep blue water. The area is car-free, accessible only by hiking trails or footpaths starting from the Wasserauen valley station. Two mountain guesthouses, Forelle and Seealpsee, operate directly on the lakeshore. The lake is fed by underground springs and serves as a natural reservoir for local dairy production. The surrounding meadows are active alpine pastures where cattle graze during the summer months. Swimming is permitted in the lake, although water temperatures remain low year-round. The shoreline features designated fire pits for public use. The geography is characterized by limestone karst formations typical of the Northeastern Swiss Alps.
The north shore of the lake looking south towards the reflection of the Säntis massif in the water.
Wear sturdy, broken-in hiking boots, as the path from the valley is steep and features significant elevation gain.
Bring a backpack to carry your own trash back down, as there are limited waste disposal facilities at the lake.
Pack layers even in summer, as the temperature drops rapidly once the sun dips behind the high peaks of the Alpstein.
Do not attempt the steep ascent in standard street footwear or flip-flops.
The hiking paths are often impassable due to snow and ice from late autumn until late spring.
Stay on marked trails to protect fragile alpine vegetation and keep dogs on a leash near grazing livestock.
