[nicollo]

It was probably originally placed in shallow water. As the sea gradually retreated, the former bay changed to marshland and finally into the field.

Good thing they found it before the ice melts and covers it in water again!

Finnish, btw, is one of the Uralic languages, one of the few European languages, along with Hungarian and Estonian, to have avoided the linguistic dominance of the Indo-Europeans. Many regions across Scandinavia and Russia, still speak Uralic languages. (Here for map: Current distribution of the Uralic languages (wikipedia)

[SunkenCiv]

Yup. They probably are a more recent coat of paint, replacing the earlier Indo-European layers, who'd replaced an even earlier group or groups.