Otafunbe Chashi - Credit: Wikimedia Commons
The site of in Urahoro, HokkaidÅ, Japan, is that once occupied by the Ainu fortified chashi of Otafunbe. It has been designated a national Historic Site. The name combines the Ainu for "sand" (ota) with that for "whale" (funbe or humbe). At the edge of the , the low elevation, rising to some , is now separated from the Pacific coast by Hokkaido Route 1038 (ja). The mound is topped by a flattish area of some by , surrounded by a ditch. Read more on Wikipedia
Source: en.wikipedia.org