The are an active volcanic complex in south-central Aomori Prefecture, Japan, in Towada-Hachimantai National Park. Often called or simply , the mountains are collectively one of the 100 Famous Japanese Mountains. Its peak, Mount Ōdake, lies southeast of central Aomori and west of central Towada and has an elevation of . The Hakkōda Mountains are located in the Ōu Mountains and are part of the Northeastern Japan Arc, a segment of the Pacific Ring of Fire. The volcanic complex consists of fourteen stratovolcanoes and lava domes arranged into two volcanic groups. The Northern Hakkōda Volcanic Group emerges from the rim of an caldera that dates back to the Pleistocene. The Southern Hakkōda Volcanic Group predates the caldera.