The 9.0 quake/tsunami has officials in North and South Korea concerned over possible eruption of the Baekdu volcano in North Korea.

The last time it erupted was in 1903.

The increase seismic activity in the area, including volcanic activity in Japan and Eastern Russia, has Korean officials worried so much that it has become part of their unification discussions.  However, both sides are downplaying it.

Korea is directly due west of the Japanese state of Honshu.