Between MorÃ n and the north coast are several lakes , including La Laguna de Leche ( the Lake of Milk , so called for its white appearance because of large lime deposits underwater ) which is the largest natural lake in Cuba . Between MorÃ n and the north coast are several lakes , including the Laguna de Leche ( the Lagoon of Milk , so called for its white appearance because of large lime deposits underwater ) which is the largest natural lake in Cuba .