There is evidence which indicates that, even in those remote times, trade relations were maintained with foreign peoples.
For example, some of the stone weapons of the era are made of types of stone that do not occur in Finland.
From those coastal regions of the Arctic Ocean, north of the present national boundary of Finland, have come the most ancient relics of human culture ever discovered by Finnish archaeologists. It was found in 1914 in Korpilahti swamp at Antrea, Karelia.
There, wild reindeer, Arctic fur-bearing animals, and--in the coastal waters -- fish, offered primitive hunters and fishermen a chance to eke out a livelihood. The world's oldest fishing net is carbon dated at 10 000 years old.
During that process, the Finnish peninsula slowly rose out of the sea, first forming solitary islands, then chains of islands, and, finally, a clearly defined extension of the continent.