This was announced on 27th at the Nara Prefectural Kashihara Borokedoor Laboratory.

The "Kasuga tomb" in Ikaruga Town has been regarded as an ancient tomb from the shape, but there was never an excavation study done and the internal structure was not known.

This survey was conducted using the latest technology to analyze elementary particles called "muon" which falls from space, and to see the inside like an x-ray without excavation work .

As a result, the cavity was confirmed in the center, and from the data analysis it was estimated that the size is about 1.8 meters wide, about 2 meters high, about 6.1 meters in length It is understood that it is seen as "burial room" which buried a key person.

The Kasuga tomb is located near the "Fujinoki kofun" which was a big topic after excavation of luxurious burial goods, and since the evidence that it was in the past for robbery was not seen, the state at the time of burial It is drawing attention as being possible.

Katsumi Ishiguro special researcher at Nara Prefectural Kashihara Okkoro Kenkaku said, "It was the first time we could see the space seen as a stone chamber in the Kasukabe Tumul, using this technique to study while protecting the old tumulus The investigation of an old tomb that was untouched will proceed, "he said.