In particular, a site where a group of pit dwelling structures believed to have had fuseya A type (thatched roof completely covering the structure) roofs has been found at Hasamiyama site (Nashida Point, Fujiidera City, Osaka).
特に伏屋A式竪穴住居と見られている建物跡がはさみ山遺跡（〈梨田地点〉大阪府藤井寺市）から出土した例がある。