from the south the territory of kalmykia is limited by kumo-manychskoj a hollow and the rivers manych and kuma, in a southeast part is washed by caspian sea, in the northeast on an insignificant plot the republic border approaches to the river volga, and in the northwest the ergeninsky height is possessed. within republic territory northern part of near-caspian lowland is called sarpinsky lowland, and in its southern part there are black earths. dominating type of a relief of the republic, the large part of its territory, plains are taking.