I can honestly say in my travels, that I have never seen anything like this. The Green Lake in the Hochschwab mountains in Austria is a hiking trail in the winter. When the seasons change and the snow melts, it creates a totally clear lake with a grassy bottom. You can dive down to explore the underwater trails, bridges, and park benches. It’s basically like the lost city of Atlantis, except without mermaids and shit.
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