Heijo Shell Mound

Japanese: 平城貝塚 - ひらじょうかいづか

A shell mound from the late Jomon period is located in Machihata, Heijo, Mishou Town, Minamiuwa District, Ehime Prefecture. The shell mound is made of saltwater shells and is piled up on a plateau at an altitude of 6 to 7 meters, about 1 km from the mouth of the Sozu River, which flows west nearby. It was discovered in 1891, and several investigations have been reported since then. Excavations in 1954 unearthed human bones, late Jomon pottery, chipped stone axes, ground stone axes, shell rings, bone needles, large fish bones such as tuna, and small horse teeth. Stone arrowheads, stone weights, and concave stones are also known to have been found among the older collected materials. The late Jomon pottery discovered at this site is classified into five types, and Type 1 pottery, which is characterized by the Jomon technique of erasing, makes up the majority of the shell mound in terms of quantity.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

愛媛県南宇和郡御荘町平城字町畑にある縄文時代後期の貝塚。付近を西流する僧都川河口より約1kmの標高6～7mの台地上に鹹水産の貝による貝塚が積成されている。1891年に発見され，以後若干の調査報告がある。1954年の発掘により，人骨，後期縄文式土器，打製石斧，磨製石斧，貝輪，骨針およびマグロなどの大型魚骨，小型の馬の歯が出土した。古い採集資料中には，石鏃，石錘，凹石（くぼみいし）なども知られている。この遺跡から発見された後期縄文式土器は5類に分類されており，磨消（すりけし）縄文手法の盛んな第1類土器が，量的に見てこの貝塚の主体をなすものである。

出典　株式会社平凡社世界大百科事典第２版について　情報

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