According to the Saitama Prefectural Board of Education, archeologists found 10 holes in the ground lined up to form two pentagons. Each side of the larger pentagon was 55 meters long while that of the smaller one was 1 meter long. They believe the holes are the remains of pillars of two pentagon-shaped buildings. The remains are believed to be the oldest found in Japan. Seven stone tools, which were typical of those used in the early Old Stone Age about 500,000 years ago, were excavated from inside the pentagons.
Archeologists view the relics as evidence that primitive people owned their own land.
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