The French established trading posts along the east coast in the late 17th century. From about 1774 to 1824, Madagascar gained prominence among pirates and European traders, particularly those involved in the trans-Atlantic slave trade. The small island of Nosy Boroha off the northeastern coast of Madagascar has been proposed by some historians as the site of the legendary pirate utopia of Libertalia. Many European sailors were shipwrecked on the coasts of the island, among them Robert Drury, whose journal is one of the few written depictions of life in southern Madagascar during the 18th century.