I'm glad to see this in an international paper. There have been loval and French documentaries since the seventies on those postmen hiking for days across -at the time- dangerous terrain to these isolated communities.
The history of these communities is also interesting as most of them stem from the escape of either slaves into the mountains or poor Europeans who lost had no land or lost theirs when slavery was abolished.
The island is amazing for its scenery, including an active volcano, and its really diverse population.