Green Lake (Grüner See) is a lake in Austria (Styria) near the town of Tragoess (Tragöß) district of Bruck.

Green Lake (Grüner See) is a lake in Austria (Styria) near the town of Tragoess (Tragöß) district of Bruck. The lake is surrounded by the Hochschwab Mountains and forests. The name "Green Lake" originated because of its emerald-green water. The clean and clear water comes from the snow-melt from the Karst Mountains.