Below Austria’s snow-capped Hochschwab mountains near the town of Tragoess, there exists a place called Gruner See (“Green Lake” in English). It’s a park that literally turns into a lake in the summer.
During the wintertime, the park consists of tranquil grassland and benches. Hikers and explorers hang around the park’s amenities, including a lake that’s only about three to six feet deep.
As spring approaches, snow and ice from the surrounding Hochschwab mountains melts and trickles down onto the park, dramatically rising the water levels.
Come summer — which is right now! — the lake becomes 40 feet deep and turns into a hotspot for scuba divers.
The entire park, including the benches, submerges under crystal-clear water from the mountains, and scuba divers are able to enjoy an underground park experience like no other.
The lake becomes green thanks to the foliage and grass lining the bottom of the basin.
The water is at its highest level in June and begins receding again in late July, which means I need to go right now before it becomes a boring, typical park again.
H/T: Huffington Post