The ruins are near the centre of the island of Little Stirrup Cay, now known as Coco Cay. Interestingly, the ruins are some distance from the shore.
Little Stirrup Cay is the most northerly island in the Berry Islands chain. Presently, visitors to Coco Cay must travel here by tender boat from cruise ships belonging to the Royal Caribbean family of cruise ships. I assume that the site is maintained by staff from Royal Caribbean.
The following text is taken from an interpretive sign on site. These ruins represent a series of possible adaptive reuses that date from the Anglo-Colonial period to c1990s. The thick stonewalls and the narrow passageways suggest an early military use. It is known that the British Royal Navy stationed warships around the Berry Islands to intercept slave ships attempting to smuggle African slaves to markets in the American South and Spanish Caribbean. The ruins may therefore have been a way station for these naval patrols and could have provided accommodations for a small land-based force of 4-6.
The fake pirate burial is a sad distraction from the historical ruins.