Tags: Mountain Range.
Okuchichibu Mountains (奥秩父山塊 Okuchichibu Sankai) or the Okuchichibu Mountainous Region (奥秩父山地 Okuchichibu Sanchi) is a mountainous district in the Kantō region and Kōshin’etsu region Japan. It covers the western part of Tokyo the western part of Saitama Prefecture the southwestern part of Gunma Prefecture the southeastern part of Nagano Prefecture the northern part of Yamanashi Prefecture. Oku (奥 oku) means the interior Okuchichibu means the interior of chichibu (秩父 chichibu).
