As work on the excavation progressed, it was discovered that there was not a definite outer demarcated line in Kokufu, and that the stretch of urban area was not large enough to encompass the Kanga area; rather, it was a small additional parcel of land.
発掘が進むと、国府に明確な外郭線が存在しないこと、都市域は付けたし程度で官衙域を包み込むほどの広がりを持たないことが判明した。