ernst thälmann island (, ) is a long and wide cuban island in the gulf of cazones that is named after ernst thälmann. during a 1970s state visit to the german democratic republic (east germany), fidel castro made a promise that cuba would donate an island to the east german government, and cayo blanco del sur was renamed in a ceremony during a state visit by erich honecker. after the reunification of germany, a german newspaper tried to visit the island and was told this transfer had only been "symbolic".