Tomas Nunuk, from Bratislava, Slovakia, was hiking through the High Tatras Mountains with a friend on November 30 when they decided that the snowy conditions made it a bad idea to continue on their planned route. Instead, they moved towards a nearby lake, where they were stunned to discover that it was completely frozen over. This video shows Tomas standing on ice so clear that it looks like he’s floating on air. Credit: Facebook/Tomas Nunuk