context: The oldest signs of permanent settlement date back to 10,700 years from South Karelia on the shores of Lake Ancylus, which nowadays is the Swan Base of Swan. Excavations have been discovered a depth of half a meter dug seven meters long and three meters wide and oval shapes. Digging into the ground refers to permanent settlement. The inhabitants of Saarenoja 2, the older of the excavation sites, are likely to have come from the east. [7]
question: Where has Finland been the longest inhabited?
answers.text: South Karelia