Imagine experiencing the beauty of an underwater park. That’s just what happens every summer when the snow melts from Austria’s Hochschwab mountains and floods the nearby ‘Green Lake’. The excess water transforms the small pond from a depth of 3 feet in winter to nearly a 39 feet depth in summer. The result is a complete submersion of the park in crystal-clear water. A wonderland full of trees, flowers, benches and even a bridge below the surface. Amazing!