by Inigo del Castillo in Cool Travel on Friday 25 October 2013

Don’t forget to bring your swim fins, dive mask, scuba cylinders, and wet suit. No, we’re not going to the beach, we’re going to the park. Grüner See (Green Lake) is a lake located in Styria, Austria. Though it’s pretty much your normal, crystal-clear, emerald-green hued lake, it does however, have one noteworthy attraction.

The lake has a fluctuating depth that leaves a park completely submerged in as much as 10 meters deep. That’s the equivalent of a three-story building. This happens around June, when the spring heat has melted the snow off the nearby glacial summits of the surrounding Karst Mountains.

Though not a very friendly place for dog-walking or jogging at this time of year, it is a favourite spot for divers. There are spectacular diving sights in this underwater park, such as a submerged bridge, bench and trees. Marc Henauer, a diving enthusiast and photographer, was able to capture the underwater scenery while he was there.

Via My Modern Met