Doddabetta, Mountain summit in Nilgiri Hills, Tamil Nadu, India

Doddabetta is the highest peak of the Nilgiri Mountains, reaching 2,637 metres (8,652 ft) about 9 km from Ooty on the Ooty-Kotagiri Road in the Nilgiris District of Tamil Nadu. A reserved forest surrounds the summit, where an observatory opened on 18 June 1983 houses two telescopes for the public.

Doddabetta's name comes from Kannada or Badaga, both meaning 'big hill'. The summit's observatory, with two telescopes for the public, was opened on 18 June 1983 and is run by the Tamil Nadu Tourism Development Corporation. In 2001–2002 it drew about 3,500 viewers a day in season and 700 off-season.

The name Doddabetta comes from Kannada or Badaga, meaning "big hill" in both languages. At the summit stands the TTDC observatory, opened on 18 June 1983, where two telescopes are available to the public. In season it drew about 3,500 viewers a day in 2001–2002, and around 700 a day off-season.

The observatory at the summit, opened on 18 June 1983 and run by the Tamil Nadu Tourism Development Corporation, holds two telescopes for public use. The peak lies 9 km from Ooty on the Ooty-Kotagiri Road, and a road reaches the summit. The signboard gives April to June, September and October as the visiting months, with temperatures from 0°C to 19°C.

The slopes carry Shola forests, small dense patches that grow in valleys between grassy slopes and exist only in the Western Ghats. These forests shelter orchid species like Vanda and Liparis, which root on the damp trunks of old trees.