Mineoka Mountain District (嶺岡山地, Mineoka-sanchi) is an area in the Bōsō Hill Range in the southern part of Chiba Prefecture. The Mineoka Mountain District runs along an east–west line across the southern part of the Bōsō Peninsula from the southern bank of the in Kamogawa, facing the Pacific Ocean, to the Sakuma District of Kyonan, facing Tokyo Bay. The highest peak in the mountain district is at Mount Atago 408.2 m (1,339 ft) Mineoka is formed from two kanji characters: the first "嶺", meaning 'peak' or 'summit' and the second "岡" meaning 'mount' or 'hill.'