The spatial isolation of Japan and Korea is clear from this rendition of elevations stretching from Taiwan to Kamchatka. …The mainland is marked by the courses of the Yangtze River on the left and the Amur River on the right. Major volcanoes are obvious in North Korea, Honshu and Hokkaido, and on the many island chains of the northwest Pacific. The patterns of rifting within Japan and its neighbor Sakhalin Island are also striking. The graphic spans great distances, and is best printed at four by ten feet.