Analysis of information sources in references of the Wikipedia article "Rai stones" in English language version.
The natives of Yap in Micronesia went 300 miles to the Palau Islands for "stone money", great calcite disks, six to twelve feet in diameter.
The natives of Yap in Micronesia went 300 miles to the Palau Islands for "stone money", great calcite disks, six to twelve feet in diameter.