Shingen Bomichi Rood

Bomichi is believed to have been a military road laid down by Takeda Shingen for the purpose of invading the present-day Nagano prefecture.
The road is called “Bomichi” because it stretches straight like a stick (“bo” in Japanese).
Today, the road is used as a horse-trekking course.

Horse riding:
https://www.hokuto-kanko.jp/guide-tag/%E4%B9%97%E9%A6%AC%E4%BD%93%E9%A8%93