Which of the following hills is the southernmost hill range in India ?

The Cardamom Hills are the southernmost hill range in India, located in the southern Western Ghats across Kerala and southwest Tamil Nadu. Geographically, the hill ranges of the southern peninsula follow a north-to-south sequence: the Nallamalai Hills (Eastern Ghats), followed by the Nilgiri Hills where the Eastern and Western Ghats meet [2]. South of the Nilgiris lies the Palghat Gap, followed by the Anaimalai Hills [2]. The Cardamom Hills are situated further south of the Anaimalai range, making them the final major range before the peninsula tapers toward Cape Comorin [1]. While the Agasthyamalai hills are sometimes considered a sub-extension, the Cardamom Hills are widely recognized in standard geographical classifications as the southernmost major range of the Western Ghats and the Indian mainland [1].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > 7. The Western Ghats > p. 58
2. [2] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 2: Structure and Physiography > The Deccan Plateau > p. 12