A national emblem is a symbol that represents a nation. It may or may not appear on the national flag. It is usually something from the natural world, eg. an animal or bird, but can be any object.
The official national emblems of nations of the world in alphabetical order :
... Valley separates the two ranges. Susuanaisky and Tonino-Anivsky ranges traverse the island in the south, while Northern-Sakhalin plain occupy most of its north. ...