Rennell Lake Tegano Festival in Lake Tegano
Lake Tegano and East Rennell form Solomon Islands' only UNESCO World Heritage Site, the largest lake in the insular Pacific set within a raised coral atoll, home to the Polynesian-speaking Rennellese people, though a specific named lake festival could not be confirmed.
East Rennell, the southern part of Rennell Island in Solomon Islands' Rennell and Bellona Province, holds the distinction of being the country's only UNESCO World Heritage Site, inscribed in 1998 for its status as the world's largest raised coral atoll.