At only 0.27 hectares (<1 acre), it is one of The Five Islands lying west of the Port of Spain in the Gulf of Paria.
Immigrants, especially East Indian indentured laborers, bound for Trinidad and Tobago often caught illnesses and contagious diseases during their sea journeys.
When nearby Nelson Island began to be used for quarantine, Lenagan became a hospital for the critically ill and highly contagious immigrants.
Foreigners who died on Lenagan were illegally cremated on a platform on the Western end of the island.
[2][3] Currently, the island is under the protection of the National Trust of Trinidad and Tobago as a heritage site.