At present, it is possible to enter the northern compound from the southern compound, passing alongside the remains of the earthen mound in the main compound, but at the time of the castle's construction, the tamon yagura blocked passage from south to north, and it is therefore thought that people would pass between the northern and southern compounds by passing through the obikuruwa (a long narrow castle compound) and koshiguruwa (a compound bounded by earthworks) that comprised the western compound.
また、現在は南側曲輪から主曲輪にある土塁跡の脇を通過して北側曲輪への侵入は可能だが、当時は多聞風櫓が南北を遮断しており、西側にある曲輪帯曲輪・腰曲輪を通って北側曲輪と南側曲輪をいききしていたと思われている。