Kurozuka (黒塚, "black mound") is the grave of an onibaba in Nihonmatsu, Fukushima Prefecture (previously ), Adachi District or the legend of that onibaba. It lives in Adachigahara (the name of the eastern shore of Abukuma River as well as the eastern base of Mount Adatara) and it is told in legends as the "Onibaba of Adachigahara." The Kurozuka is actually the name of the mound in which this onibaba is buried, but nowadays it can also be used to refer to the onibaba as well. Also based on this legend are the noh titled , the nagauta and kabuki performance Adachigahara, and the kabuki jōruri Ōshū Adachigahara (奥州安達原).