malformalady:
If you visit Austria’s Gruner See (Green Lake) in the winter, you can hike around the park. Visit again in the summer and the snow and ice on the nearby mountains have melted and flooded the park with emerald-green water (up to 30 feet deep in some spots). In other words, you can scuba dive along the same trails that were hikeable just half a year ago. Fish and divers alike swim over park benches, under bridges, and past road signs. You can actually see the park bench mentioned in the background of the above photo.
