groups made burials at the same exact grave field in Pecine, near Kostolac. Nine graves of Autariatae dating to 4th century BC and scattered Autariatae and Celtic graves around these earlier graves show that the two groups mixed rather than made war and this resulted in the lower Morava valley becoming a Celto-Thraco-Illyrian interaction zone. Culture A standard practice of the Autariatae entailed killing their weak and wounded. This was meant to prevent meek individuals from falling into the hands of their enemies. This practice perhaps was motivated by the superstitious belief that the enemy, by drinking the blood of prisoners and by eating parts of their bodies containing their virtues, would become even stronger and acquire a special power over the entire community of the Autariatae. The Autariatae left a legacy of material wealth. So far, more than 100 castle ruins were identified to have been inhabited by the Autariatae, as well as thousands of tumuli in which they had been buried. Movable materials (mostly jewelry and weapons) reveal all specific features associated with the ethno-cultural originality of the Autariatae. The Autariatae established a continuous tradition of manufacturing metal and ceramic products. Artifacts consisting of metal sheets with luxurious golden and silver belts of Mramorac type indicate the complexity of this tradition. The Autariatae are a classic example of a "highland" people who also show all the characteristics of a "highland" mentality (i.e. preservation of old beliefs). Case in point, the Autariatae have strongly maintained their burial customs of burning the dead in tumuli, which did not change until the end of the Glasinac culture. Archaeological remains indicate that the religious life of the Autariatae was influenced by both their ancestor cult and the cult of their solar god. One can find the numerous evidence of the solar cult throughout the territories once controlled by the Autariatae. The Autariatae economy was based on cattle breeding, metalwork, handicraft and trade. Because of its need for Greek and Italic goods, this Illyrian tribe was one of the biggest trade partners of the western and central Balkans to both Greek and Italic traders between the 7th and 6th centuries BC. See also List of ancient Illyrian peoples and tribes List of ancient tribes in Illyria References Bibliography Illyrian tribes Ancient tribes in Albania Ancient tribes in Bosnia and Herzegovina Ancient tribes in Kosovo Ancient tribes in Montenegro Ancient tribes in North Macedonia