It was less vast than the area occupied by the Lipiţa culture, encompassing today's Pokuttya, Maramureş, Bucovina and to a lesser extent, Northwest Moldova.
The arrival of East Germanic tribes in the Upper Dniester region forced the Costoboci to withdraw or crowd into the Carpathians at the end of the 2nd century AD and the beginning of the 3rd, where a part of them were already living.
The demarcation line is fairly clear, since the neighbour Przeworsk peoples did not have tumular tombs.
As in the Lipiţa culture, the dead were cremated and their ashes were put in urns which were buried in the tumuli.
We can follow the Costoboci even after the beginning of the 5th century, the newly formed Prague-Korchak culture being linked to the Carpathian Tumuli.