Underwater hiking trails

Green Lake - An Austrian Lake That Is Used for Hiking | Oddity Central - Collecting Oddities

By Spooky on October 6th, 2010 Category: Pics, Travel A rare natural phenomenon turns one of Austria's most beautiful hiking trails into a 10 meter-deep lake, for half the year. Located at the foot of the Hochschwab Mountains, in Tragoess, Styria, Green Lake is one of the most bizarre natural phenomena in the world.

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In winter, this area in Australia features a hiking trail. But when all that snow melts, it creates a lake, complete with underwater trails, benches, and bridges.