(click to enlarge) Bunker in the Rundninkai Forest
(click to enlarge)
The Rundninkai Forest is about 40 km southwest of Vilnius. It was a forest where those who managed to escape the Vilna Ghetto hid and mounted guerilla attacks against the Nazis. For more information, see
According to my internet searches, other "partisan forests" in Lithuania were used as bases to attack the Soviet occupiers after WWII.