Facebook post by University of Helsinki

A Finnish-Estonian research team discovered an ancient meteorite impact crater in Central Finland. It has a diameter of 2.6 km and it is covered by the Lake Summasjärvi (Summanen). The age of the impact event and the type of the meteorite causing the crater, are still unknown.
Twelfth impact structure discovered in Central Finland | University of Helsinki helsinki.fi

The discovery places Finland into the top of countries where impact craters are found.