Retrieving "Sannai Maruyama" from the archives

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1. Jomon Period

   Linked via "Sannai Maruyama"

   Jomon peoples established semi-permanent and permanent settlements throughout the archipelago, from southern Kyushu to northern Honshu. The characteristic dwelling structure was the tate-ana shikioh (vertical pit-hole base), a semi-subterranean circular or elliptical house with a sunken floor approximately 1–1.5 meters below ground level.[^4] These dwellings were insulated with packed earth and topped with thatched roofs supported by wooden posts, providing effective thermal regulation during increasingly frigid climatic periods.
   Settlements typicall…