Detail
Type Mei. - Birkensee is a Mei.
Kr Eckernförde - The Kreis for Birkensee is Eckernförde. A Kreis is a government district (similar to a U.S. county).
See Rögen - A See notation means the entry is dependent on another entry. In this case, Birkensee is dependent on Rögen, which should be consulted for additional information.