Lake Gruner hides a real park – in the winter it is only 1-2 meters deep, but after the floods of melt water depth becomes 12 meters;
Lake Gruner versteet e realen Park - am Wanter ass et nëmmen 1-2 Meter déif, mee no der Iwwerschwemmung vun der Schmelzwasserstiefe gëtt 12 Meter;