Twelve strongholds dating back to the Early Medieval times located in Central Poland have been surveyed with use of non-invasive prospection techniques over the course of years. The results of the research have been rounded up in a recent publication.
Archaeologists conducting excavations at the 14th century ringfort in Rozprza in central Poland, discovered traces of earlier fortifications that can be dated to the end of the 10th century.
Archaeologists from University of Łódź discovered a previously unknown knight keep thanks to airborne laser scanning. In 2014 one of the archaeologists in the Institute of Archaeology on University of Łódź stumbled upon a land feature near the village Gieczno while browsing through the Digital Elevation Model being a part of Polish Geoportal.
Three hillforts in Central Poland were subject of non-invasive research by scientists from Institute of Archaeology of University of Łódź and Łódź branch of Scientific Association of Polish Archaeologists.