Varkala Tunnel

Varkala Tunnel in Varkala (celebrated across southern India as 'Varkala Thurappu' and a monumental 19th century civil engineering marvel of the Kingdom of Travancore, excavated over 14 years by hand through solid laterite cliff formations between 1867 and 1880 under Dewan T. Madhava Rao and Dewan A. Seshayya Sastri, world famous for its 924 meter underground inland navigation canal connecting Kollam with Trivandrum along the historic TS Canal / Thiruvananthapuram Shoranur waterway), located in the heart of Varkala in Kerala, stands as the coastal town's premier historic waterway heritage site.

Built under the patronage of Maharaja Ayilyam Thirunal Rama Varma to establish a secure, all weather inland water trade route shielding wooden country boats (Kettuvallams) and spice barges from treacherous Arabian Sea waves, the tunnel comprises two distinct segments, the 322 meter Sivagiri tunnel and the 602 meter Chilakkoor tunnel, passing directly beneath bustling town streets and laterite ridges.

It's the home of the dramatic laterite stone arched tunnel portals where natural tropical ferns and moss drape ancient masonry walls, the placid canal waters of the TS Canal currently being revived under the National Waterway 3 project for backwater kayaking, eco boat cruises, and heritage tourism, the historic brick lined barrel vaults reflecting centuries old British and Travancore masonry craftsmanship, the leafy canal embankment promenades where local fishermen cast hand nets beneath swaying coconut palms, and an intensely evocative, peaceful heritage atmosphere where echoes of 19th century spice trade flotillas blend with the cool sea breeze of Varkala.

It represents a rich Travancore maritime trade heritage, 19th century engineering triumph, and backwater canal tourism where laterite tunnels, TS Canal waterways, Sivagiri hills, and Varkala coastal heritage unite in Varkala Tunnel.

Located in the central town area near Chilakkoor and Sivagiri, it sits just 2 km from Varkala Cliff Beach, 1.5 km from Varkala Sivagiri Railway Station (VAK), 42 km from Trivandrum International Airport (TRV), and 35 km from Kollam, easily accessible by auto rickshaw, bicycle, or walking from the town center.

1880 AD Travancore Engineering & 924m Dual Tunnels

Supervised by British chief engineer William Barton, hundreds of local laborers chiseled the 924 meter waterway using picks and chisels through solid laterite bedrock.

The dual tunnels enabled safe year round transport of pepper, coir, and spices between the trading ports of Kollam (Quilon) and Thiruvananthapuram.

Truth is, peering into the cool, dark laterite tunnel entrance where emerald canal water disappears into the subterranean hill is deeply captivating.

TS Canal Revival & Backwater Kayaking

National Waterway 3: Ongoing rejuvenation works under inland water transport schemes are restoring navigation for electric tourist boats and heritage barges.

Kayaking & Photography: The calm, tree shaded canal waters flanking the tunnel portal offer great vantage points for kayak tours and architectural photography.

Varkala Heritage & Beach Circuit

Town Circuit: Sits just 2 km from ancient Janardhana Swamy Temple, 2.5 km from Varkala North Cliff, and 2 km from Sivagiri Mutt.

Coastal Day Tour: Connects smoothly with Kappil Beach & Lake (7 km), Anjengo Fort & Lighthouse (12 km), and Ponnumthuruthu Golden Island (9 km).

After exploring the historic masonry arches of Varkala Tunnel, relax on Varkala Cliff Beach, visit Janardhana Swamy Temple, or tour Varkala.