The presentation will discuss a particular group of deviant burials registered in Bulgarian lands dating back to the Middle Ages. It is argued that the face-down (prone) position cannot be the result of taphonomyc post-depositional processes and is an intentional and meaningful act. The known cases of prone burials from both individual and mass grave contexts will be accounted for. Their analysis will highlight any patterns of chronology, distribution etc. associated with them. The record will be further examined against the known archaeological evidence for deviant burials in European perspective. Finally, potential interpretative framework will be established.