Kō Site is located near the northeastern terrace cliff of the Habikino hill, west of the confluence of the Yamato and Ishikawa rivers. The site cameo academic attention in 1916 with the collection of stone tools that may have been in the Japanese Paleolithic period. At that time, it was believed by mainstream archaeologists that Japan did not have a Paleolithic period but the discovery of characteristic knife-shaped stone tools confirmed as this as a Paleolithic site. In upper layers the stratigraphy, human bones of the Jōmon and Yayoi periods, the underground storage pits of the Yayoi period, salt-making pottery of the Kofun period, and the remains of a Buddhist temple built in the Asuka period, indicate a pattern of continuous settlement and human activity over many thousands of years. The uppermost layers contained the remains of the Nara periodprovincial capital of Kawachi Province and included shards of porcelain, glazed pottery, earthenware, etc., as well as earthenware from into the Heian period have been excavated. Currently, a part of the site is maintained as a park. It is located about a 10-minute walk from Hajinosato Station on the Kintetsu RailwayMinami Osaka Line.[2]
^"日下貝塚". Cultural Heritage Online (in Japanese). Agency for Cultural Affairs (Japan). Archived from the original on 2022-02-13. Retrieved 11 March 2021.
^Isomura, Yukio; Sakai, Hideya (2012). (国指定史跡事典) National Historic Site Encyclopedia. 学生社. ISBN4311750404.(in Japanese)
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