Oil Pass - Oil Pass

...National Route 144 passes through the old Torii Pass, which is located north of the current pass and passes at an altitude of 1,390m. During the Edo period, the Ozasa Highway, which passed through the pass, prospered as a side road to the Hokkoku Highway, and was also called Abura Pass because large amounts of oil seeds from northern Shinano were transported through it. In 1932, the road was opened, connecting Ueda City with Tsumagoi Village and other areas in northern Joshu.

*Some of the terminology that refers to "Abura Pass" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…国道144号線が通っており，旧鳥居峠は現在の峠より北にあって標高1390mの地点を通過していた。江戸時代この峠を通る大笹街道は北国街道の脇往還として繁栄し，北信濃の種油が大量輸送されたことから油（あぶら）峠とも呼ばれた。1932年車道が開通し，上田市と嬬恋（つまごい）村など北上州を結んでいる。…

※「油峠」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報