A very important role in their life was the cult of the dead, which is seen in their careful burials and burial ceremonies, as well as the richness of their burial sites. In northern parts, there was a long tradition of cremation and burial in shallow graves, while in the south the dead were buried in large stone or earth tumuli (natively called ''gromile'') that in Herzegovina were reaching monumental sizes, more than 50 m wide and 5 m high. ''Japodian tribes'' had an affinity to decoration (heavy, oversized necklaces out of yellow, blue or white glass paste, and large bronze fibulas, as well as spiral bracelets, diadems and helmets out of bronze foil).