Many Caribbean islands (Anguilla included) are made primarily of limestone. Over many thousands of years, caves often form in this type of rock speckling the islands with tons of little caves to explore.
On Anguilla there are plenty to explore, but the hike to the Iguana Cave is particularly pleasant.
It starts on the quiet and isolated sands of Katouche Bay Beach just past the Masara Resort. It’s pretty much due West of the capital of The Valley and very easy to find. The only awkward part is the very steep road that descends the last mile toward the shore.
There you should find a gap in the sea grape trees. Staying on this path will take you past a salt pond, through a forest crawling with hermit crabs, up an old stone staircase, through a grove of cactus, past the occasional red-footed tortoise, and finally to the cave.
Going at an easy pace, the hike clocks in at around 45 minutes up and 45 minutes back. For the most part, it’s pleasant and I highly recommend it as a way to break up a bounty of beautiful beach days.