It is located about 15 kilometres southwest of the city of Fukushima and east of Mount Bandai. Its last known eruption was in 1996.
The mountain is actually multiple volcanoes forming a broad, forested massif. It abuts Mount Azuma, a dormant volcano to the north. The peak is called Minowa-yama. It is the highest peak in the Adatara range, which stretches about 9 km in a north-south direction.
The active summit crater is surrounded by hot springs and fumaroles. Sulfur mining was carried out in the 19th century, and 72 mine workers were killed in an eruption in 1900. Poems about Mount Adatara by Kōtarō Takamura from his book "Chieko-sho" helped make it famous.