The Takachiho Line, originally named the of
Japanese Government Railways, opened on February 20, 1935, in the section between Nobeoka and Hyūga-Okamoto stations. Following some extensions, the line reached Takachiho Station on July 22, 1972 and was renamed the Takachiho Line same day. Freight service ceased in 1974. In 1982 all service was suspended for four months due to typhoon damage. When the national railway was privatized in 1987, the line belonged to
JR Kyushu, which withdrew from the operation of the Takachiho Line and transferred it to Takachiho Railway, a new company established by local funds, on April 28, 1989. A new company, the
Takachiho Amaterasu Railway, was later established. It repurposed a section of the Takachiho Line in Takachiho for tourist services.
Proposed extension After the line opened in 1972, construction of the 23 km section from Takachiho to the
Takamori line continued until 1975, when flooding in the 6500m Takamori tunnel (16 km north of Takachiho) resulted in work being suspended. Construction was formally abandoned in 1980. ==Stations==