St. Lucia is located in the Lesser Antilles. The chain of islands (Cuba to Tobago-basically) are created from volcanic activity as a result of the Caribbean Plate subducting beneath the South and North American Plates.
'blah blah blah...were are the pics?'
That's all the geology I cared to do on this trip. The sun, pool bar and food were too much of a distraction. Better luck next time.