01 / Naoe Stone Embankment
Part of it cut away for a bridge replacement,boulders over a meter across came out of its core.

This stone-faced embankment on the Matsukawa River was built to the plan of Naoe Kanetsugu. Its cross-section is a trapezoid about 5 m wide at the top, 9 m at the base and 2 m high. When part of it was cut away for a bridge replacement, boulders kept emerging from its core.
- 1.2 km of the embankment survives
- Trapezoid: about 5 m top, 9 m base, 2 m high
- City historic site since 1986 (Showa 61)

