Walk in Yano

I walked in Yano town with my son yesterday. It was because he said that he wanted to see the stone marker which was carved to "Ittyou". He studied it in lesson of rocal history in his school.
"Ttyou" is a old unit about distance. "Ittyou" is about 109m.
As the Yano is old town, there are many ruins. I often find strange things.