We have analyzed and considered the stone processing and masonry technology around Kagoshima Castle Honmaru, and we were able to clarify the following.
Although it was not possible to confirm the masonry of the Keicho period at the beginning of the castle construction, the stones of the Keicho period were reprocessed and used during the renovation in the 3rd year of Keian and the 9th year of Genroku. It remains on the east side of Honmaru.
It is highly possible that the stone wall on the south side of the eastern side of the main enclosure, which is assumed to be the 「Honmaru Tatsumi no hou」, which is the scope of the repair in the 3rd year of Keian, described in the 『Kyu kizatsuroku』, has not been reloaded.
Regarding the 「Minaminohou Ishigaki」, which is the repair range of Kanbun 4 (1664), which is recorded in
『Kyu kizatsuroku』, a part of the range could be identified in the stone wall on the south side of the east side of Honmaru by this survey. It was possible to clarify the stone processing and masonry technology at that time.
The post-fire renovation in Genroku 9 (1696) is likely to have been reloaded, except for some areas in Keian 3 (1650) and Kanbun 4 years.
