Some four to nine well-preserved bodies were found at the site. While the volcanic soil of mainland Japan is rather acidic, making it rather difficult for certain kinds of remains to survive, such remains were able to survive much more easily in the limestone geology of Okinawa. | Some four to nine well-preserved bodies were found at the site. While the volcanic soil of mainland Japan is rather acidic, making it rather difficult for certain kinds of remains to survive, such remains were able to survive much more easily in the limestone geology of Okinawa. |