The Takemaru Daiage Site is presumed to be a trace of a station house built on the "Sankaido" public road linking the capital and the Dazaifu. A station house is a facility created by a telecommunication system systematized by the Ritsury 律 Nation. In order to enable quick communication with the city and the region, a horse was called a station horse, and was built every 30 villages (about 16 km). In addition, the station house along the public road connecting Dazaifu and the capital was used for the traffic of foreign envoys, so the rule of rubble and white wall was defined.

In the excavation survey conducted in 1983 (Showa 58), which was carried out with field development as an opportunity, three drilled pillar buildings were discovered. Two of the pillar holes were square with rounded corners, and each side was a large one with a length of more than 1 m. Such pillar holes are often found in the official site, which is a trace of public facilities such as the ancient government office.

A large amount of ancient tiles have been excavated from the Takemaru Daiage ruins. This is one of the evidences that you can think of the ruins as the station house ruins, along with the huge pillar-lined remains, according to the literature record that the station houses were rubble. Also, the tiles that were excavated show no difference in the age they were made. Therefore, it is possible that the rubble building that was once built at the Takemaru Dahi remains has a short period of time until it is no longer used, and that it has not been repainted.