The Abaco Islands lie in the north of The Bahamas, about 193 miles east of Miami, Florida, US. The main islands are Great Abaco and Little Abaco, which is just west of Great Abaco's northern tip. There are several smaller barrier cays, of which the northernmost are Walker's Cay and its sister island Grand Cay. To the south, the next inhabited islands are Spaniā¦The Abaco Islands lie in the north of The Bahamas, about 193 miles east of Miami, Florida, US. The main islands are Great Abaco and Little Abaco, which is just west of Great Abaco's northern tip. There are several smaller barrier cays, of which the northernmost are Walker's Cay and its sister island Grand Cay. To the south, the next inhabited islands are Spanish Cay and Green Turtle Cay, with its settlement of New Plymouth, Great Guana Cay, private Scotland Cay, Man-O-War Cay and Elbow Cay, with its settlement of Hope Town. Southernmost are Tilloo Cay and Lubbers Quarters. Also off Abaco's western shore is Gorda Cay, a Disney-owned island and cruise ship stop renamed Castaway Cay. Also in the vicinity is Moore's Island.