Through the study of such phenomena, geologists have been able to deduce the origins of Finland.
This sounds like the Finns arrived much like the Slavs did, to claim the north for themselves, which is not accurate.
Finland is full of archeological evidence that Baltic Finns/Karelians have lived there for thousands of years, fishing and hunting as usual.
New evidence suggests that Finno-Ugric peoples' range was much greater southward than previously thought.
During the last Ice Age they lived as far south as Holland and Britain in the West and the north shore of the Black Sea in the East.
While the continental ice sheet and great bodies of water still covered most of Finland, a tundra, overgrown with dwarf birch, bordered the glacial margin, both in the north and in the south.
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.
It was during these upheavals of Nature that a number of the most ancient inhabited localities in the country vanished.
However, as work continues, new finds shed a different light on prehistory of Finland.
"Ancestors of present-day Finns were hunters, trappers, agriculturists who came to Finland by way of the Baltic regions during the first centuries AD, spreading slowly from south and west to east and north.