If Strangemaps wasn't such a reliable source, I'd think this was a hoax. A small part of East Germany lives on in the Caribbean. Cuba gave the tiny island to the GDR in 1972 while on a state visit to East Berlin and it wasn't mentioned in the German unification treaties. Commenters on the thread have found satellite images of the island in question, including this one.
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This is most insane travel deal I've ever seen...Caribbean cruise during the winter for as low as $5/person/night. Those low fares are probably difficult to find and are also all sold out by now, but still. The company behind the cruises also does easyJet and the newly opened easyHotels in London and Switzerland (rooms from 15 euros a night).
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