The Oslo Tunnel (Norwegian: Oslotunnelen) is a 3,632-metre (11,916 ft), double-track, railway tunnel which runs between Olav Kyrres plass and Oslo Central Station (Oslo S) in Oslo, Norway. The tunnel constitutes the eastern-most section of the Drammen Line and runs below the central business district of Oslo. It features the four-track Nationaltheatret Station, Norway's second-busiest railway station, where the Oslo Tunnels lies directly beneath the Common Tunnel of the Oslo Metro. At Frogner, the Elisenberg Station was built, but has never been used. The tunnel is the busiest section of railway line in Norway and serves all west-bound trains from Oslo, including many services of the Oslo Commuter Rail and the Airport Express Train. Traditionally, Oslo had two stations, the larger Oslo East Station (or Oslo Ø, located at the spot of the current Oslo S) and Oslo West Station (Oslo V), which served the Drammen Line. This caused a physical barrier between the two parts of the railway network, only connected by the Oslo Port Line which ran partly in city streets. Formal planning of a central station and a tunnel connecting the Drammen Line to Oslo Ø started in 1938, and the final plans were approved in 1968. The Oslo Tunnel opened on 1 June 1980, and made it possible to close Oslo V in 1989. Nationaltheatret saw a major upgrade in 1999, when it was expanded to four tracks, and from 2008 to 2010, the tunnel saw a major technical upgrade. There are plans to build a second tunnel to increase train capacity west of Oslo.
The Oslo Tunnel (Norwegian: Oslotunnelen) is a 3,632-metre (11,916 ft), double-track, railway tunnel which runs between Olav Kyrres plass and Oslo Central Station (Oslo S) in Oslo, Norway. The tunnel constitutes the eastern-most section of the Drammen Line and runs below the central business district of Oslo. It features the four-track Nationaltheatret Station, Norway's second-busiest railway station, where the Oslo Tunnels lies directly beneath the Common Tunnel of the Oslo Metro. At Frogner, the Elisenberg Station was built, but has never been used. The tunnel is the busiest section of railway line in Norway and serves all west-bound trains from Oslo, including many services of the Oslo Commuter Rail and the Airport Express Train.

The Cimmerians (also Kimmerians; Greek: Κιμμέριοι, Kimmérioi) were a nomadic Indo-European people, who appeared about 1000 BC and are mentioned later in 8th century BC in Assyrian records. While the Cimmerians were often described by contemporaries as culturally "Scythian", they evidently differed ethnically from the Scythians proper, who also displaced and replaced the Cimmerians. Probably originating in the Pontic steppe, the Cimmerians subsequently migrated both into Western Europe and to the south, by way of the Caucasus. Some of them likely comprised a force that, c. 714 BC, invaded Urartu, a state subject to the Neo-Assyrian Empire. This foray was defeated by Assyrian forces under Sargon II in 705, after which the same, southern branch of Cimmerians turned west towards Anatolia and conquered Phrygia in 696/5. They reached the height of their power in 652 after taking Sardis, the capital of Lydia; however an invasion of Assyrian-controlled Anshan was thwarted. Soon after 619, Alyattes of Lydia defeated them. There are no further mentions of them in historical sources, but it is likely that they settled in Cappadocia.