The Western Ghats mountain range that runs along the entire eastern side isolates Kerala from the neighboring state Tamil Nadu. There is a pass or gap in the mountain range at Palakkad known as Palakkad Gap which is the only corridor to enter into Kerala and therefore it has been traditionally a vital passage for transporting tobacco, Gold, brass and alloy metals from Tamil Nadu and the spices from Kerala. On the northern side of it are the Valayar hills and on the southern sides are the Nelliyampathy hills. The land on the Kerala state on the side of Valayar hills was known earlier as Vadamalappuram and the land on the Kerala state on the side of Nelliyampathy hills was known as Thenmalappuram. The land facing the Pass which had a width of about 41 kilometers consisting of places like Mankara, Peruvamba, Koduvayur, Erimayur, Thenkurissi, Kuzhalmannam, etc., was known as Naduvattom which was strategically an important area, as the trade and therefore the collection of tax on goods entering and leaving Kerala were a great source of income. The Zamorin had captured this area known as Naduvattom in AD 1452 and had brought Kuthiravattom Nair from Kozhikode to settle down there as protector of Zamorin’s interests. In the middle of 18
th century the Zamorine, along with Nedunganad and Chavakkad, entrusted this Naduvattom also to be administered by Ullanat Panickers. Probably the services of the feudal servants of Zamorin - Dharmoth Panicker who was administering Nedunganad and Kuthiravattathu Nair who was staying in Naduvattom till then were more needed at the northern parts of Zamorin’s kingdom where Mysorean invasion had started and Zamorin felt more confidence to entrust the most fertile and remunerative lands of his kingdom to the custody of Ullanat Panicker who had already proved his administrative skill as the southernmost Karyakkar of the Zamorin. Thus the Ullanat Panicker’s reputation got elevated further.