Green Castle Hill

This extinct volcanic hill in the interior of Antigua rises to a summit ringed by large upright stones, some of which have been interpreted as a possible megalithic arrangement while others regard them as natural formations. A walking trail climbs through dry scrub to the top, where the boulders and wide views over the island reward the ascent. The site's origins remain debated among archaeologists. Its combination of geology and speculation makes it an unusual inland landmark on a low-lying island.