Early medieval stronghold in Bnin near Poznań in the light of dendrochronology

The article presents results of dendrochronological investigations of wooden constructions of the rampart of early medieval stronghold in Bnin (current location Kómik-Bnin), of which a well preserved stone-wooden-earthen fortifications are among the best recognized in Wielkopolska. The site was excavated in the years 1961-1969. The relicts of two phases of the rampart construction discovered in so-called northern trench were dated to the end of the 12,h - beginning of the 13lh century. Based on results of dendrochronological dates of 25 samples taken in 1994, a discovered part of the rampart was constructed in two phases with a break in the year 939. The older construction was finished in 938, while the younger one in 940.The article presents results of dendrochronological investigations of wooden constructions of the rampart of early medieval stronghold in Bnin (current location Kómik-Bnin), of which a well preserved stone-wooden-earthen fortifications are among the best recognized in Wielkopolska. The site was excavated in the years 1961-1969. The relicts of two phases of the rampart construction discovered in so-called northern trench were dated to the end of the 12,h - beginning of the 13lh century. Based on results of dendrochronological dates of 25 samples taken in 1994, a discovered part of the rampart was constructed in two phases with a break in the year 939. The older construction was finished in 938, while the younger one in 940