In recent years, the area to the southeast of the Gulf of Finland (on the Izhora plateau and in the lower reaches of the River Luga) has opened up a number of archaeological sites dating from the first to the tenth century AD. There are stone graves from the Pre-Roman and Roman Iron Age, settlements with scratched ceramics, cremation burials from the Migration Period, hill-forts and cemeteries from the Viking Age. These sites can be built into a cultural and chronological sequence. Finds from these sites are very similar to objects from Estonia and southwest Finland. At the beginning of the second millennium, Medieval Russian culture, which levelled local cultural characteristics, spread on the Izhora plateau.