Called Gruner See (Green Lake), this beautiful lake in Styria, Austria is best known for its shimmering, emerald-green hue and its fluctuating depth throughout the year. Thanks to the variance in water levels, you’ll sometimes find the park completely submerged. It’s a big hit with divers and is fully adorned with a bridge, a bench, and submerged trees. Continue reading for a video and more information.

Want to visit Gruner See yourself sometime in the future, well here’s a bit more information:

Being that the water for the lake is provided mainly by runoff from the surrounding karst mountains, it is at its fullest (about 10 meters deeper than usual) in the spring after the sun has melted the snow off nearby glacial summits, which is typically sometime in June.