I used to live on St. Thomas. If you go down to Magen's Bay and walk on to the beach, look to your far right. Past the end of the beach, the trees come down to the water. Just a little farther on you'll see another beach. You can walk to it through the water, if you carry everything on your head, or, if driving, go past the road leading down to Magens Beach. You'll come to a spot along the road where a path leads down into the woods (there used to be a gate). The path winds back and forth down to the beach. But be warned! There used to be occasional robberies and other minor assaults so it is definitely At Your Own Risk. If you have any questions, e-mail me. It's been 10 years since I lived down there, but will be stopping on a cruise in March.