The Nakanosawa Site is situated in the midst of an eastern highland so-called Nobeyama Plateau in the Yatsugatake Mountains.
In November 1954, Chosuke Serizawa, Masakazu Yoshizaki and Shigeya Yui excavated this site and corrected many fragments of the potteries, stone-impllements and clay earrings. These remains were dug out from single layer which is black soil accumulated on a volcanic ash layer. Therefore from the point of the archeological view, all those relics are regarded to have existed at the same Period. My typo ogica research has been concentrated on the potteries and clay earrings only.
The potteries are divided into two groups-patterned and non-patterned ones. The former are redivided into two sorts; “cord-marked” and “patterned with incised-lines or clay nicked-strings.”
The “cord-marked” pottery has a close connection with that found in Tohoku and Kwanto districts in Japan.
And the others are those which were native in south-eastern parts of Nagano Prefecture extending to Yamanashi Prefecture; it seems that they may have something common to the contemporary types in Tokai District.
Chronologically, the Nakanosawa site comes under the category of the beginning of the lateast Jomon Period (Jomon Period is divided into five), about 1, 000 B. C.
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