Palakkad Gap or Palghat Gap is a low mountain pass in the Western Ghats between Coimbatore in Tamil Nadu and Palakkad in Kerala. It has an average elevation of 140 metres (460 ft) with a width of 30 kilometres (19 mi). The pass is located between the Nilgiri Hills to the north and Anaimalai Hills to the south.
There are various theories about the origin of Palakkad gap. One among them is that it is caused by the landslide due to rivers flowing in opposite directions. The Bharatha Puzha river originates in the Palakkad Gap from rivulets and tributaries feeding from steep escarpment slopes along the flanks of the Ghats.
Palakkad gap has played a major role in enabling human migration into Kerala from parts of Tamil Nadu. From 300 B.C. to 13th century, it also helped the Cheras rule the entire Kerala and the Kongu Nadu as one geographical unit from Karur in Western Tamil Nadu. Tamil Brahmins migrated to Palakkad from Central Tamil Nadu via the Palakkad gap from the 15th century to 18th century.
Palakkad pronunciation , also known as Palghat, is a city and municipality in the state of Kerala in southern India, spread over an area of 26.60 km2 and is the administrative headquarters of the Palakkad District. In earlier times, Palakkad was known as Palakkattussery. Palakkad is the seventh most populous town in Kerala and lies near the Palghat Gap. Malayalam is the generally spoken language in Palakkad as it is the official language. The city is situated about 350 kilometres (217 mi) north of state capital Thiruvananthapuram and 54 kilometers south west of Coimbatore, and 66 km north east of Thrissur on the Salem-Kanyakumari National Highway NH 47.
The commonly held belief is that the name Palakkad is a fusion of two Malayalam words, Pala, which was the name given for barren land during the Sangam period, and Kadu, which means forest.
Palakkad is the gateway to Kerala due to the presence of the Palakkad Gap, in the Western Ghats. Malayalam is the generally spoken language in Palakkad as it is the official language. The town is blessed with many small and medium rivers, which are tributaries of the Bharathapuzha River. Of the number of dams in Palakkad district, the largest Malampuzha dam is 12 km from Palakkad town.
Palakkad is a Lok Sabha constituency in Kerala.
Palghat Lok Sabha constituency is composed of the following assembly segments: