The Sekiwagu Kanga Remain located at about two kilometers south of Izumizaki Yokoana Cave is the ancient site of Gunga (county government offices) of the ancient Shirakawa County and established from the end of the seventh century to the early eighth century.
泉崎横穴の約2キロメートル南にある関和久官衙遺跡は古代白河郡の郡衙（郡役所）跡で、7世紀末から8世紀初頭に成立した。