The highest peak is Mount Hakkyō in the Ōmine Mountains. Other peaks in the central group are Mount Shakka(1800m) and Mount Sanjō (1719m). To the East in the Daikō Mountains is Mount Ōdaigahara (1695m). In the South is Mount Daitō 大塔山(1122m). The Obako Mountains separate Nara Prefecture from Wakayama Prefecture.