An in-depth guide to these highly popular English-speaking Caribbean islands by the author of our top-selling Virgin Islands Adventure Guide. Dominica is unique in that it was never farmed over; it remains jungle-covered, mountainous and the only island still occupied by the original Carib Indians. St. Lucia is more developed, but is breathtaking in its beauty, with high peaks and azure-blue bays dotted with colorful boats. Town and regional maps, photos.