Since 1978 the Japan Petroglyph Society have found no less than 3000 rocks with engravings throughout Japanese islands, scholarshiped by Government of Education and Cultures and Boards of Education.
It is to be noted that most of those 3000 engraved rocks are located in the precincts or at the summits of sacred hills, which have been worshipped by the native inhabitants probably since prehistoric ages.
The engraved stone tablets shown in photographs above were excavated at one of sanctuaries in Okinawa and are kept at the Governmental Museum of Okinawa prefecture, where since prehistoric ages about 12000 B.P. to 6500 B. P. “Sobata sea – people” used to dwell and build peculiar Okinawan cultures.
As seen in the pictures (see top of page), 2 big birds are engraved at the top of buildings (perhaps ancient types of shrines) and at the lower part of each building.
These will show a characteristic of Japanese petroglyphs and their religious sides, because even today at Okinawa native sea people have sincere faith and pious belief in the legendary homeland, “Nidai-Kanai” which is believed to have been located in a very far place in the ocean, where their ancestors lived happy life forever. Some scholar suppose that their legendary homeland must be the lost, sunken continent of Mu. We do not know exactly when the continent of Mu sank, but according to under sea archaeology, some kind of geological catastrophe must have happened in 12000 B.P. These dates correspond to the legendary Okinawan stories. The stone tablets tell complete stories of the Mu’s culture and religion at that time. These 12 stone tablets, kept at the Governmental Museum, will provide us clue’s to solve the enigmatic origins of human letters and languages. Another characteristic of the Japanese petroglyphs is that 30% of them could be deciphered with Proto-Sumerian and Sumerian cuneiforms. We do not know exactly why Japanese petroglyphs are related with Sumerian letters. The only thing we could suppose is that in the late prehistoric ages, Sumerian seafaring tribes threatened by Akkadians invasions fled to the seas. Some tribes reached prehistoric Japan, which the scholars who belong to The Epigraphic Society of Harvard University used to suggest at the ISAC and E.S. conference.Emeritus Prof. Barry Fell (late President of E.S.) was an outstanding leader of the theory, adding that he is sure the Sumerian seafaring people reached the Far East while other groups reached the Americas B.C.