Encyclopædia Britannica, Inc.

A long, narrow strip of coastland covers much of Kerala state in southwestern India. This coastland is known as the Kerala Plains. Lying along the Arabian Sea, the plains form most of the Malabar Coast, the southern portion of India’s west coast. The plains are bordered on the east by the hills of the Western Ghats and the Southern Ghats.

Narrow in the north and wide in the south, the Kerala Plains are about 330 miles…