What you’re looking at in the following photos are the fabulous interior of Harrison’s Caves, Barbados, West Indies. The island is formed exclusively from coral limestone and is therefore made of biomorphic rock, unlike all its neighbours in the Caribbean chain, which are volcanic in origin. The island is one huge limestone filter, so its water is very pure. These caves were formed by water erosion, and are fantastically festooned with stalactites and stalagmites in a wide variety of forms. The caves are toured by tram, and you get to see 1 mile of the 3 mile cave system. There is also an extremely good information centre above, on the surface.