No. 2 Onumazaki Tunnel - 第二小沼崎トンネル

No. 1 Onumazaki Tunnel 第一小沼崎トンネルNo. 2 Onumazaki Tunnel 第二小沼崎トンネルNo. 3 Onumazaki Tunnel 第三小沼崎トンネル

Description - 解説

Opened in 1932 together with the Kamimiyori ~ Yunokami section of the Aizu Line. Heading towards the #2 tunnel from Yunokami, the line went through a flat plateau of agricultural land of Idairako (location of the Saifukuji Buddhist temple), where the line made a turn to the east before continuing northwards again.

No. 2 Onumazaki Tunnel was quite short, about 100m in length, and the construction method was the same as for the rest of the Onumazaki tunnels, with the original tunnel wall being made entirely of concrete bricks, with a lining of poured concrete up until about halfway up the side walls. Later, the poured concrete layer on the lower half of the walls was given an extra layer, and a layer of wooden boards was applied to the arch of the ceiling where the brick was exposed; this was fastened in place by iron ribs that ran all the way around the arch from floor to floor.



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