In 2008 the Imperial Household Agency for the first time permitted the request of 16 academic societies and associations fronted by the Japanese Archaeological Association to enter the mausoleum for research, which was conducted on February 22 of the same year by 16 people.
2008年、宮内庁が陵墓としては初めて日本考古学協会を窓口とする16学・協会の要望による立ち入り調査を許可し、同年2月22日に実施され16名が立ち入った。