There are only 16 places in the world where meteorites are known to have hit the Earth and only two of them are in Europe. One of them and the only one in Poland is the reserve in Morask close to Poznan. The depressions in the tree cover reflect mini-craters after the fall of a meteorite about 5 thousand years ago. At present they are filled with water. The largest crater has a diameter of 60 m and is 11 m deep.