THE CARIBBEAN ISLANDS. A. Location 1. Consists of 3 islands groupsa. Greater Antillesb. Lesser Antilles c. Bahamas (archipelago) . . 2. Island Formations-Varying landforms a result of differing physical forces.a. Greater Antilles and part of Lesser Antilles are volcanic mountain tops. i. Rugged, mountainous islands. ii. Some volcanoes are still active..