The main bailey is 65m x 62m with embankments measuring 8.75m wide at the base and up to 9m in high in some places. It's companion castle Mochizukishi Castle is only 50m away across a small valley but is a distinct castle in the yakatajiro design. Mochizukishi Castle is just across a small valley and it should be considered that the two worked together as one fortification. Today it is somewhat difficult to get from one to the other since there is no good path and with thick vegetation to wade through so you might as well go around. One of my materials from the Koka City has a note glued inside that said that Mochizuki Castle and Mochizukishi Castle are on private property and the owner does not permit strangers on their property. This is probably why there are no signs or trails, unlike most of the other famous Koka castles, and the entrance to each is hard to find. I did not see this before I visited and there are no "no trespassing" signs, but other castle go'ers visit both sites too, so use your best judgment and be respectful.
Mochizuki Castle (Koka)
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