The ephemeral nature of religious practices and rituals makes them challenging to trace in the archaeological record of Late Neolithic hunter-gatherer communities in central and eastern Europe. A ritual feature with Bell Beaker elements discovered in north-eastern Poland, a region occupied by hunter-gatherer groups of the Neman cultural circle, is thus exceptional. Its syncretic character indicates its role as a harbinger of wider cultural change that led to the emergence in this region of the western group of the Bronze Age Trzciniec cultural circle.