Explain about the grave

There was a board beside the grave of goddess. On the board, explain about the grave was written. Following story was about the explain.
In Japanese old book "Kojiki", the goddess who made Japan Islands was buried in Mt. Hiba-yama which was there between Idumo country and Houki contry in old days.
Area around the grave stone, it was kept carefully as a god's area. There are many important kinds of trees, too.