(i) Vindhyachal. This range extends from east to west in the north of river Narmada. It separates Northern India from Southern India. Its average height is 300 metres. It starts from Gujarat in the west and goes upto Bihar in the east passing through the Vindhya Pradesh.
(ii) Satpura. This mountain range spreads between the Narmada and the Tapti rivers. They extend from Gujarat in the west to Amarkantak in the east. Dhupgarh (1350 metres) is the highest point of these ranges.
(iii) Aravali Hills. Aravali mountain range is extended from Delhi to Gujarat in 800 km. Their direction is southwest and now these are small residue parts of hills. Their highest peak is Mount Abu. (1722 m.)
(iv) Nilgiri Hills. The western and eastern ghats join each other in the south where they are known as the Nilgiris. Doda Betta (2637 metres) is the highest peak in the Nilgiri. They are also known as the Blue mountains.
