Extensive grassland of steppe makes up the heart of Mongolia both geographically and economically. The entire far eastern part of Mongolia falls into this area extending west below Khangai range to the Great lake basin of Uvs province. This sea of grass covers rolling undulating land for as far as the eye can see. It provides most important grazing lands for Mongolian livestock herds. Most of the eastern steppe is largely uninhabited where thousands of migrating gazelle live undisturbed making the biggest attraction of this wild steppe stretches.