Gosaulacke (lit. Gosau puddle) is a small lake inbetween the two Gosau lakes.

It takes about one hour to reach the lake from Gosausee.

Unlike the other two lakes, the water level in the Gosaulacke is highly dependent on the amount of rainfall. So, while on certain summer days there won't be a lake at all, on other days whole grasslands between the two lakes turn into calm ponds, more often than not symmetrically reflecting the scenery around them.