Asia’s longest railway tunnel hides 50 kilometres of a South Korean bullet-train line underground: Passengers race through the darkness at 300 kilometres an hour, seeing nothing
South Korea's Yulhyeon Tunnel is Asia's longest railway passage, stretching over fifty kilometers underground. This engineering marvel allows high-speed trains to travel beneath Seoul's busy metropolitan area. Passengers experience a ten-minute journey through solid rock at speeds up to 300 kilometers per hour. The tunnel significantly improved rail connectivity for southeastern Seoul residents after its 2015 opening. It remains an essential, yet largely unseen, component of South Korea's transport network.
South Korea's Yulhyeon Tunnel is Asia's longest railway passage, stretching over fifty kilometers underground. This engineering marvel allows high-speed trains to travel beneath Seoul's busy metropolitan area. Passengers experience a ten-minute journey through solid rock at speeds up to 300 kilometers per hour. The tunnel significantly improved rail connectivity for southeastern Seoul residents after its 2015 opening. It remains an essential, yet largely unseen, component of South Korea's transport network.
