Lake Tegano
Central
Lake Tegano, also known locally as Tegano or Tungano, is the largest lake in the insular Pacific and covers 155 square kilometers, making up nearly 18% of Rennell Island's area. This brackish lake, with a depth of up to 44 meters, is sustained by a subterranean duct system connecting it to the sea, resulting in elevated salt concentrations. Surrounded by cliffs and located in the central basin of East Rennell, the lake supports diverse wildlife including eels, water snakes, and serves as a bird breeding area. Historically, Lake Tegano was used as a strategic airbase during World War II, with several aircraft reportedly resting at its bottom. The lake's unique geological formation as part of the world's second largest raised coral atoll and its largely unmodified natural environment contribute to its designation as a UNESCO World Heritage Site. Visitors can appreciate its vast size, ecological significance, and the cultural heritage of the Polynesian inhabitants of Rennell Island.
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Tip: The best time to visit Lake Tegano is during the dry season when weather conditions are favorable for exploring and boating. Visitors are advised to arrange tours through local operators familiar with the lake's geography and history. While there are no specific ticketing systems, respectful engagement with local communities and guides enhances the experience. Booking in advance is recommended due to the remote location and limited transport options. No specific discounts are noted, but visitors should inquire locally about community-based tour packages.
Interesting facts
- •Lake Tegano is the largest lake in the insular Pacific and covers about 17.6% of Rennell Island's area.
- •The lake has a unique mixture of brackish fresh and salt water maintained by an underground duct system connecting it to the sea.
- •During World War II, the lake was used as an airbase by both Japanese and American forces, with several aircraft now resting at the lake's bottom.
- •Rennell Island, where Lake Tegano is located, is the second largest raised coral atoll in the world.
- •The lake supports a rich ecosystem including eels, water snakes, and is a significant bird breeding habitat.
History
Lake Tegano is situated on Rennell Island, which was first settled by people of the Lapita culture between 2000 and 1600 BC.
Polynesian settlers arrived around 1400 AD from Wallis and Futuna Islands.
During World War II, the lake served as a base for Japanese floatplanes and later American Catalina aircraft.
After the war, several Catalinas were scuttled in the lake, remnants of which remain today.
The island and lake were later studied by scientific expeditions, contributing to the understanding of its unique ecosystem and cultural heritage.
Place Guide
Lake Tegano Main Basin
The vast central basin of Lake Tegano, featuring deep brackish waters and unique aquatic life. Visitors can explore by boat to observe the diverse ecology and remnants of World War II aircraft beneath the surface.
Tigoa Airbase Site1940s
Located at the easternmost point of Lake Tegano, this former World War II airbase was used by Japanese floatplanes and later by American Catalinas. The site holds historical significance and remnants of wartime activity.