01 / Abt rack railway
A grade of 90 m in 1,000 m,climbed on a cogwheel.
The Oigawa Railway's Ikawa Line, the Minami-Alps Abt Line (南アルプスあぷとライン), runs 25.5 km from Senzu Station to Ikawa Station in about two hours. Between Abt-Ichishiro and Nagashima Dam, the locomotive's cogwheel meshes with a toothed rack rail between the tracks to climb a 90‰ grade. It is Japan's only Abt rack railway, and on the way it stops at Okuōikojō Station (奥大井湖上駅), on a spit of land jutting into a lake.
- Japan's only Abt rack railway
- A 90‰ grade
- Senzu to Ikawa, 25.5 km

