Gruner See (Green Lake) is a lake in Styria, Austria known for its shimmering, emerald-green hue and its fluctuating depth throughout the year, at times leaving a park completely submerged in it. The site has proven to be an attraction for divers, inviting them to plunge in and explore the spectacular underwater park, fully adorned with a bridge and a bench. There are even submerged trees in the crystal-clear waters that gives it a magical look. Photographer and diving enthusiast Marc…
