Explanation: The Cardamom hills denote the entire Western Ghats that lie south of the Palakkad gap.

• Straddling both Kerala and Tamil Nadu, the crest of the hills form the boundary between the two states.
• The hills are known for their cardamom cultivation which began in the 19th century.
• The place is known for its dense forests and the natural undergrowth of wild cardamom. Other items cultivated here are tea, coffee, teak and bamboo.

Source: NCERT