Pariyatra Mountains is a range of mountains mentioned in the epic Mahabharata. It is identified to the north western part of what is now called as Vindhya mountain ranges. In ancient times only southern parts of Vindhya mountain ranges, which are having higher elevation, were considered as Vindhya mountains, while the other part of this mountain range with less height is named as Pariyatra (north western part) and Riksha (north eastern part).
References
Pariyatra Mountains Wikipedia(Text) CC BY-SA