in the Middle Paleolithic period 150,000 years ago. By the Neolithic period, the area was relatively densely populated. Remains of Bronze Age pile dwellings from as early as 3800 BC have been found in the shallow areas of many lakes. Around 1500 BC, Celtic tribes settled in the area. The Raetians lived in the eastern regions, while the west was occupied by the Helvetii. A female who died in about 200 B.C. was found buried in a carved tree trunk during a construction project at the Kern school complex in March 2017 in Aussersihl. Archaeologists revealed that she was approximately 40 years old when she died and likely carried out little physical labor when she was alive. A sheepskin coat, a belt chain, a fancy wool dress, a scarf and a pendant made of glass, and amber beads were also discovered with the woman. Antiquity In 58 BC, the Helvetii tried to evade migratory pressure from Germanic tribes by moving into Gaul, but were defeated by Julius Caesar's armies and then sent back. The alpine region became integrated into the Roman Empire and was extensively romanized in the course of the following centuries. The center of Roman administration was at Aventicum (Avenches). In 259, Alamanni tribes overran the Limes, putting the settlements on Swiss territory on the frontier of the Roman Empire. The first Christian bishoprics were founded in the fourth century. With the fall of the Western Roman Empire, Germanic tribes entered the area. Burgundians settled in the west; while in the north, Alamanni settlers slowly forced the earlier Celto-Roman population to retreat into the mountains. Burgundy became a part of the kingdom of the Franks in 534; two years later, the dukedom of the Alamans followed suit. In the Alaman-controlled region, only isolated Christian communities continued to exist and Irish monks re-introduced the Christian faith in the early 7th century. Medieval period Under the Carolingian kings, the feudal system proliferated, and monasteries and bishoprics were important bases for maintaining the rule. The Treaty of Verdun of 843 assigned Upper Burgundy (the western part of what is today Switzerland) to Lotharingia, and Alemannia (the eastern part) to the eastern kingdom of Louis the German which would become part of the Holy Roman Empire. In the 10th century, as the rule of the Carolingians waned, Magyars destroyed Basel in 917 and St. Gallen in 926. Only after the victory of