Beautiful lakes

We've found these beautiful 6 lakes when we were on vocations in Grodno. They're not natural because they were done after work on the extraction of chalk and that's why they look so green & blue. There is no photoshop edition!
But still it's a secrec how water could fill the big moats. And of course, if you're planning to visit these places, remember the lakes are deep and there is almost no shelving shores.