The Surangas of Kasaragod are a centuries-old tunnel well system that continues to provide water in Kerala's laterite hills. These gravity-fed tunnels, stretching up to 300 meters, showcase traditional water conservation techniques passed down through generations. With over 5,000 surangas still in use, this unique system remains a lifeline for local farmers and a fascinating eco-tourism attraction. Explore the history, construction, and significance of this ancient water management marvel.