Trübsee (1788 m) is an intermediate cable car station by the Bergbahnen Engelberg-Trübsee-Titlis, Trüebsee (lit.: turbid lake, Germanized: Trübsee ) is an Alpine lake (1764 m) on the Ober Trüebsee Alpine pasture (or often just incorrectly shortened to Trüebsee) in the upper part of the extensive municipality of Wolfenschiessen in the Swiss canton of Nidwalden. The lake lies at the foot of the Titlis above the village resort of Engelberg. It can be reached from the village by cable car, or via several alpine walking paths, e.g. the Pfaffenwand. The first aerial cableway was built in 1927 from Gerschnialp, that could be reached with Gerschnialpbahn. The lake is a hydroelectric reservoir, providing water to the underground power station Trübsee (opened in 1968) near Engelberg, before flowing into the lake Eugenisee.