at . South Korea Spiral at Hambaek 1st Tunnel at between Hambaek station and Jodong station on the Hambaek Line;– one loop, single track. Spiral at Solan Tunnel at between East Baeksan station and Dogye station on the Yeongdong Line. There is one loop on a single track railway but double track is installed in the middle of the tunnel to enable trains from opposing directions to pass each other. There used to be a spiral at Daegang Tunnel at between Danseong station and Jungnyeong station on the Jungang Line;– one loop, single track. A new double track tunnel has opened which by-passes the line with the spiral, which has since closed. There used to be a spiral at Ddwari Tunnel at between Geumgyo station and Chiak station on Jungang Line. A new double track tunnel has opened which by-passes the line with the spiral, which has since closed. Madagascar Spiral at Anjiro at on the main line from Antananarivo to Toamasina. Mexico Spiral between Creel and San Rafael at on the Ferrocarril Chihuahua al Pacífico. Myanmar One spiral on the Burma Mines Railway at . One spiral close to Shwenyaung at on the Thazi-Taunggyi line. New Zealand Raurimu Spiral at on the North Island Main Trunk. The line is single track and involves two short tunnels around a suitable hill. Spiral on the Driving Creek Railway at . This railway also has several reverses or zig-zags. There used to be a spiral at on the Ellis and Burnand Tramway, Ongarue, which closed in 1958 and is now part of the Timber Trail. Norway Spiral on the Flåm Line between Myrdal and Flåm at . Spiral on the Vestfold Line around the town of Tønsberg at . Peru Spiral between San Bartolome and Matucana at on the Central Railway. Russia Spiral just north of Indyuk at on the North Caucasus Railway route from Tuapse (Tуапсе) through Gornyy to Belorechensk (Белореченск). There used to be a spiral at "Devil's Bridge", on the now abandoned line from Kholmsk to Yushno-Sakhalinsk on Sakhalin Island. Serbia Spiral at Jatare at on the Šargan Eight Heritage Railway in Western Serbia between from Mokra Gora and Šargan Vitasi. Slovakia Spiral at Telgártska slučka at on the Brezno to Gelnica Line. The spiral is constructed of two viaducts and a 1,200m tunnel. South Africa Spiral near Komga at on the branch line to Mthatha as it descends