Mora–Siljan Airport Mora–Siljan Airport Mora–Siljan Airport is located about 7 km or 3.3 NM southwest of Mora, Sweden. Its fixed-base operator (FBO), AB Dalaflyget, which also operates Dala Airport, consists of the municipalities of Mora, Falun, Borlänge and Dalarna County, in Central Sweden. "Dalaflyget" also provides air traffic control services. The 45 m wide runway and parking can accommodate Boeing 737-type airliners. Two flights operate to Arlanda on weekdays (three on Thursdays), and one on Sundays, in approximately 50 minutes. 2011 to 2015, Avies operated the line with a 19-seater Jetstream 32 turboprop aircraft. The airfield is also home to "Ovansiljans Flygklubb".
Siljan Ring an annular outcrop of Lower Paleozoic sedimentary rocks within Proterozoic granites of the Dala series. In Dalarna, the basement rocks consist of granites dated as 1.6 billion years old, putting them at the boundary between the Paleoproterozoic and the Mesoproterozoic. They were emplaced shortly after the Svecokarelian orogeny. The oldest sedimentary rocks that outcrop in the Siljan area are of Ordovician age. The sequence is dominated by limestone formations with one prominent black shale, the Fjäcka Shale, which is bituminous and has generated petroleum, sourcing the oil found in limestone cavities in the same area. The Ordovician sequence is overlain