Inlandsvägen Siljan. The road then continues via Orsa through Härjedalen and Jämtland to Östersund at the Lake Storsjön. From then on the route goes through Lapland and its wilderness, via the towns Vilhelmina, Storuman, Arvidsjaur, Jokkmokk and Gällivare to its northern terminus in Karesuando at the Finnish border. Inlandsvägen is simultaneously the European route E45 in Sweden, between Gällivare and Svappavaara it is also the European route E10. The European route E45 and Riksväg 26 follows the same route for approximately between Johannisholm and Mora, the latter being the end of the road for Riksväg 26. Only the first few kilometers
Siljan Ring by rocks of the Llandovery series (Lower Silurian). During the last ice age the area was covered by a thick icesheet. The bedrock was sculpted by the ice, with the softer Palaeozoic sedimentary rocks being preferentially eroded. These erosional hollows are now occupied by lakes Siljan, Orsa, Skattungen and Ore. In accordance with theories about abiogenic petroleum (that hydrocarbons can be formed without involving material from dead plants and animals), astrophysicist Thomas Gold suggested that there might be major deposits of oil and natural gas in the area. Drilling was carried out in the late 1980s and early 1990s but