Scuba Diving in a Newly Flooded Meadow.
The "Grüner See" (engl. Green Lake) is situated in upper styria, austria (see geotag). It is amazingly beautiful because of its deep green/blue colour and the surrounding alpine scenery. The lake itself dries up in autumn but fills up with melting water. The water itself of the lake is extremely pure, like glass. The colour is a result of light refraction.