See:
Jerzy Siemaszko, Stone Age settlement in the Lega Valley microregion of north-east Poland, in: European Journal of Archaeology Volume 2,(3) 1999 pp. 293-312 - http://muzeum.suwalki.pl/wp-content/uploads/2014/10/Siemaszko-Lega-Valley-1999.pdf
See:
Jerzy Siemaszko, Stone Age settlement in the Lega Valley microregion of north-east Poland, in: European Journal of Archaeology Volume 2,(3) 1999 pp. 293-312 - http://muzeum.suwalki.pl/wp-content/uploads/2014/10/Siemaszko-Lega-Valley-1999.pdf
Medieval settlement
Wielbark culture necropolis at Rejczuchy.
Stodółka (Schwanen Insel – Łabędzia Wyspa). Jezioro Łańskie. Late Neolithic Age and Early Bronze Age settlement.