A 1,000ft stretch of land rose up above sea level on Japanese island . The 100ft wide mass on Hokkaido is now more than 4,000ft above sea level . It is believed to have been forced to the surface by a landslide nearby .
A 1,000ft stretch of land rose up above sea level on Japanese island . The 100ft wide mass on Hokkaido is now some 30 to 50ft above sea level . It is believed to have been forced to the surface by a landslide nearby .