//
Photo: 663highland, CC BY 2.5 via Wikimedia Commons
This mountain, literally "Showa New Mountain", popped out in a local farmer's field in December 1943 and, two years later, had reached a height of 402 m. It is next to the cable car valley station on the east side of Mt. Usu.
Shōwa-shinzan is a volcanic lava dome in the Shikotsu-Toya National Park, Hokkaido, Japan, next to Mount Usu. The mountain was created between 28 December 1943 and September 1945. Initially, a series of strong earthquakes shook the area, and wheat fields were rapidly uplifted. Lava broke through the surface and the current peak was created. The peak is now 398 m (1,306 ft) tall, and still actively smoking.