Russia

N Korea

S Korea

Japan

500 miles

500 km

Sea of Japan

5 miles

5 km

Aira caldera

Sakurajima

Kagoshima

Russia

China

N Korea

S Korea

Japan

500 miles

500 km

5 miles

5 km

Sea of Japan

East China Sea

Caldera boundary

Aira caldera

Sakurajima

Kagoshima