This 924 ft tunnel was built in the19th century and it took nearly 14years to be completed. A prominent tourist attraction in Varkala, the tunnel is a must-visit site on your tour to Varkala.Tunnel under one of the cliffs in Varkala. It was once used for passing boats carrying goods and people between Thiruvananthapuram and Kollam.

light in the tunnelcliff view which is above the tunnelanother view of cliff