会津線旧線は、大川ダムによって昭和62年に完成した若郷湖(わかさとこ)によって付け替えられる前の、旧線路。 以前の線路や集落の一部は湖に沈み、付け替えられたが、一部の施設や旧隊道、線路が残っている。
The old line of the Aizu Line is a former railway line before being replaced by Wako Tako (Wakasa Toriko) completed in 1986 by Okawa Dam. Some of the former railroad tracks and villages have sunk into the lake and have been replaced, but some facilities, old forces and railway tracks remain.