Culebra was used as a bombing practice site by the US Navy between 1901 and 1975. The island is still full of artifacts like rusted tanks and even unexploded ordnances.
Stayed at the Posada La Hamaca guest house for a night in Culebra and the owner was so incredibly nice, and hospitable. This was the view from the charming little balcony.
Flying over flat land for some time then finally seeing mountains makes you appreciate them that much more.