The oldest settlement known by name on the territory of modern Belgrade was found in the Karaburma area. Remains of the Celtic (and later Roman) settlement of Singidunum were found near Karaburma and neighboring Rospi Ćuprija, including necropolis (Horseman's grave 16) rich in artifacts and parts of "dunum", fortress, so it is believed that the settlement itself was located here. These remains represent a limited archaeological evidence as there were almost no traces left of the Celtic town, except for them. The necropolises contained valuable artistic artifacts which belonged to the warriors of the Scordisci tribe. An apparent Celtic cultural influences have been woven into the spiritual culture of the Singidunum inhabitants, and later mixed with Roman classical cultural elements.