Kamiyamada Shell Midden - Credit: Wikimedia Commons
The is a middle Jōmon period shell midden located in what is now part of the city of Kahoku, Ishikawa in the Hokuriku region of Japan. The site was designated a National Historic Site of Japan in 1982. The middens were discovered in 1930 and are noteworthy as the first shell midden to be discovered in Ishikawa Prefecture. Read more on Wikipedia
Source: en.wikipedia.org