Visit the largest earthen dam in India, the Banasura Sagar Dam. Enjoy the view of the Banasura hills while boating in the dam's reservoir. Take a hike to the nearby hills or enjoy a delicious meal at the nearby restaurant.
Explore the prehistoric Edakkal Caves which have ancient inscriptions and murals. The hike to the caves can be a bit challenging, but the view from the top is worth it. Enjoy a refreshing drink and snack at the nearby stalls after the hike.
Visit the ancient Thirunelli Temple situated in the Brahmagiri Hills. Take a dip in the nearby Papanasini river which is believed to wash away all sins. Enjoy a vegetarian meal at the temple's cafeteria before heading back.
Consider visiting the Soochippara Waterfalls and the Kuruvadweep Island if you have an extra day. To maximize your fun, try the local delicacies like the bamboo rice and the spicy fish curry. Don't forget to carry comfortable shoes, sunscreen, and hats to beat the heat.