Geology of Finland subsequent uplift and erosion would have eroded all of these sediments. In Finland, Caledonian nappes overlie shield rocks of Archean age. Despite occurring in about the same area the Scandinavian Caledonides and the modern Scandinavian Mountains are unrelated. The ice sheet that covered Finland intermittently during the Quaternary grew out from the Scandinavian Mountains. By some estimates the Quaternary glaciers eroded away on average 25 m of rock in Finland, with the degree of erosion being highly variable. Some of the material eroded in Finland has ended up in Germany, Poland, Russia and the Baltic states. Ground till left by
Latvia–Russia border from the intersection point of the state borders of Latvia, Russia and Belarus, and ends with the joint borders of Latvia, Russia and Estonia. Latvia borders only one oblast of Russia, the Pskov Oblast. Russia borders seven Latvian municipalities. Crossing the border is allowed only at border controls. Most people need a visa on one or both sides of the border. Listed from north: Border crossings can also be done by air travel. The only international airport in Latvia is Riga International Airport which has scheduled flights among other places to Moscow and Saint Petersburg. The airports at Daugavpils, Liepāja,