The Kōya-sen is a railway line in Osaka Prefecture and Wakayama Prefecture, Japan, owned and operated by the Nankai Electric Railway, a private railway operator. It connects Osaka and Koyasan, the capital of the Japanese Buddhist sect Shingon, via the suburbs of Osaka, such as Sakai, Osakasayama, Tondabayashi and Kawachinagano in Osaka Prefecture and Hashimoto and Kōya in Wakayama Prefecture. To distinguish it from other Nankai Lines, the Kōya Line is indicated with pictograms of coniferous-like trees which bring to mind Mount Kōya, or with the line colour, green.
For historical reasons, the line formally begins at Shiomibashi Station in Osaka and crosses the Nankai Main Line, the company's other main line, at Kishinosato-Tamade Station, though operationally it starts at Namba Station together with the Nankai Line, diverges at Kishinosato-Tamade Station and goes to Gokurakubashi Station, to connect to Koyasan through Nankai Cable Line.
The section from Shiomibashi to Kishinosato-Tamade, called the 汐見橋線, has trains operating only in between those two stations. The section from Hashimoto to Gokurakubashi and the Koyasan Cable is named the こうや花鉄道 by operating a sightseeing train "Tenku".
Nankai Main Line | NK01 | 難波 | (3.9) | - | ● | ● | ● | ● | ● | Osaka Metro:
Kintetsu Namba Line (A01: ) Hanshin Namba Line (HS41: Osaka Namba) JR West Kansai Main Line (Yamatoji Line) (JR-Q17:) | Chūō-ku, Osaka | Osaka Prefecture | ||
NK02 | 今宮戎 | (3.0) | - | | | | | | | | | | | Naniwa-ku, Osaka | |||||
NK03 | 新今宮 | (2.5) | - | ● | ● | ● | ● | ● | JR West:
Osaka Metro ():
Hankai Tramway Hankai Line (HN52: Shin-Imamiya-Ekimae) | Nishinari-ku, Osaka | ||||
NK04 | 萩ノ茶屋 | (1.9) | - | | | | | | | | | | | ||||||
NK05 | 天下茶屋 | (0.9) | - | ● | ● | ● | ● | ● | ||||||
NK06 | 岸里玉出 | 0.0 | 4.6 | | | | | | | | | | | ||||||
Kōya Line | ||||||||||||||
NK51 | 帝塚山 | 1.1 | 5.7 | | | | | | | | | | | Sumiyoshi-ku, Osaka | |||||
NK52 | 住吉東 | 2.0 | 6.6 | | | | | | | | | | | ||||||
NK53 | 沢ノ町 | 2.9 | 7.5 | | | | | | | | | | | ||||||
NK54 | 我孫子前 | 3.5 | 8.1 | | | | | | | | | | | ||||||
NK55 | 浅香山 | 4.8 | 9.4 | | | | | | | | | | | Sakai-ku, Sakai | |||||
NK56 | 堺東 | 6.4 | 11.0 | ● | ● | ● | ● | ▲ | ||||||
NK57 | 三国ヶ丘 | 7.9 | 12.5 | ● | | | | | | | | | ||||||
NK58 | 百舌鳥八幡 | 8.8 | 13.4 | ● | | | | | | | | | ||||||
NK59 | 中百舌鳥 | 9.5 | 14.1 | ● | | | | | | | | |
Osaka Metro Midosuji Line (M30)| rowspan="2" Kita-ku, Sakai | |||||
NK60 | 白鷺 | 10.5 | 15.1 | ● | | | | | | | | | ||||||
NK61 | 初芝 | 12.0 | 16.6 | ● | | | | | | | | | Higashi-ku, Sakai | |||||
NK62 | 萩原天神 | 12.9 | 17.5 | ● | | | | | | | | | ||||||
NK63 | 北野田 | 14.7 | 19.3 | ● | ● | ● | ● | | | ||||||
NK64 | 狭山 | 15.6 | 20.2 | ● | ● | | | | | | | Ōsakasayama | |||||
NK65 | 大阪狭山市 | 17.2 | 21.8 | ● | ● | | | | | | | ||||||
NK66 | 金剛 | 18.3 | 22.9 | ● | ● | ● | ● | ● | ||||||
NK67 | 滝谷 | 20.0 | 24.6 | ● | ● | | | | | | | Tondabayashi | |||||
NK68 | 千代田 | 21.3 | 25.9 | ● | ● | | | | | | | Kawachinagano | |||||
NK69 | 河内長野 | 23.4 | 28.0 | ● | ● | ● | ● | ● | ||||||
NK70 | 三日市町 | 25.1 | 29.7 | ● | ● | ● | ● | | | ||||||
NK71 | 美加の台 | 26.7 | 31.3 | ● | ● | ● | | | |||||||
NK72 | 千早口 | 28.6 | 33.2 | ● | ● | | | | | |||||||
NK73 | 天見 | 30.3 | 34.9 | ● | ● | | | | | |||||||
NK74 | 紀見峠 | 34.0 | 38.6 | ● | ● | | | | | Hashimoto | Wakayama Prefecture | |||||
NK75 | 林間田園都市 | 35.3 | 39.9 | ● | ● | ● | ● | |||||||
NK76 | 御幸辻 | 37.3 | 41.9 | ● | ● | | | ||||||||
NK77 | 橋本 | 40.1 | 44.7 | ● | ● | ● | ● | |||||||
NK78 | 紀伊清水 | 43.2 | 47.8 | ● | ● | | | | | |||||||
NK79 | 学文路 | 45.8 | 50.4 | ● | ● | ● | ◆ | |||||||
NK80 | 九度山 | 47.6 | 52.2 | ● | ● | ● | ◆ | Kudoyama, Ito District | ||||||
NK81 | 高野下 | 49.6 | 54.2 | ● | ● | | | | | |||||||
NK82 | 下古沢 | 51.3 | 55.9 | ● | ● | | | | | |||||||
NK83 | 上古沢 | 53.0 | 57.6 | ● | ● | | | | | |||||||
NK84 | 紀伊細川 | 56.0 | 60.6 | ● | ● | | | | | Kōya, Ito District | ||||||
NK85 | 紀伊神谷 | 58.4 | 63.0 | ● | ● | | | | | |||||||
NK86 | 極楽橋 | 59.9 | 64.5 | ● | ● | ● | ● |
NK06-5 | 汐見橋 | 0.0 | Naniwa-ku, Osaka | Osaka Prefecture | ||
NK06-4 | 芦原町 | 0.9 | ||||
NK06-3 | 木津川 | 1.6 | Nishinari-ku, Osaka | |||
NK06-2 | 津守 | 2.6 | ||||
NK06-1 | 西天下茶屋 | 3.6 | ||||
NK06 | 岸里玉出 | 4.6 |
The Kawachinagano - Mikkaichicho section opened in 1914, and the line was extended to Hashimoto the following year. In 1922, the company merged with Nankai, and the Hashimoto to Gokurakubashi section opened in 1929.
Double-tracking of the line commenced in 1924, reaching Kawachinagano in 1938. The line voltage was increased to 1,500 V DC in 1973, and the following year, double-tracking reached Mikkaichicho, and Hashimoto in 1995.
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