Marea del Portillo, well known because of its black sand, extends over 2 km. It lies 108 km. south of Manzanillo Airport, in Granma. Besides the peculiar coloring of the sand, it also owes its charm to its location within a bay sheltered by the Sierra Maestra mountains and bordered by coconut and palm trees.
500 m. from Marea del Portillo, Granma, is found Cayo Blanco islet, a place with awesome sea bottoms, belonging to an impressive system of sea terraces. It owes its beauty to the combination of sea, plains and mountains of the Sierra Maestra.
The rich historical traditions, the fascinating contrast of its landscapes (combining sea, mountains and fertile planes) and its prodigal nature are the biggest attractions which support the incipient tourism development of the Province of Granma, an extensive plane divided into two by the mountains of La Sierra Maestra, irrigated by the long Cauto River and covering 8 362 km2 of the southeast portion of the Island of Cuba.