 The Hardanger Line ( Norwegian : Hardangerbana or Hardangerbanen ) was a 27 @.@ 45 @-@ kilometre ( 17 @.@ 06 mi ) railway between Voss and Granvin in Hordaland , Norway . The line connected to the Bergen Line in Voss , and ran to the Hardangerfjord and the district of Hardanger . Construction started in 1921 , but the line did not open until 1 April 1935 . Owned and operated by the Norwegian State Railways ( NSB ) , the passenger transport was provided by three NSB Class 64 electric multiple units . They remained in use until 1985 , when passenger transport was terminated . All transport ceased in 1988 , and 21 kilometres ( 13 mi ) of the line was demolished in 1991 . The 3 kilometres ( 2 mi ) from Voss to Palmafoss remains , and is owned by the Norwegian National Rail Administration . The line featured six stations , fourteen halts , four tunnels and was among Norway 's steepest railways . It was NSB 's first line to open electrified . The line was known as the Granvin Line ( Granvinbanen ) until February 1936 . 
