A human tooth accompanying a hoard of modified shells shaped as tools have been found in the Sakitari-do cave (Nanjo, Okinawa). They are dated to c. 20-23,000 years ago. They seem to be the first known evidence of human presence in the East Asian archipelago.
The Sakitari-do cave is just 1.5 km away from where the Minatogawa human remains were found, which are however of a somewhat more recent date (c. 18-16 Ka ago).
|Minatogawa 1 (source)|
Source: The Asahi Shimbun (via Pileta).