<Tr> <Th_colspan="2"> Climbing </Th> </Tr> <Tr> <Th> Easiest route </Th> <Td> NH 67 (Satellite view) or Nilgiri Mountain Railway </Td> </Tr> <P> The Nilgiri (Blue Mountains), form part of the Western Ghats in western Tamil Nadu, Karnataka and Kerala states in Southern India . At least 24 of the Nilgiri mountains' peaks are above 2,000 metres (6,600 ft), the highest peak being Doddabetta, at 2,637 metres (8,652 ft). </P> <P> Spanning an area of 2,479 square kilometres (957 sq mi), the mountains' central location is 11 ° 22 ′ 30" N 76 ° 45 ′ 30" E ﻿ / ﻿ 11.37500 ° N 76.75833 ° E ﻿ / 11.37500; 76.75833 . </P>

What is the name of the highest summit nilgiri hills