 It is located in the Leeward Islands in the northern part of the Lesser Antilles, a partly volcanic island arc.To the north lies Antigua and Barbuda and the British Oversea Territory of Montserrat, with Dominica lying to the south.The main two islands are Basse-Terre (west) and Grande-Terre (east), which form a butterfly shape as viewed from above, the two 'wings' of which are separated by the Grand Cul-de-Sac Marin, Rivière Salée and Petit Cul-de-Sac Marin.