 The Black Falcon's Fortress was known as the Eagle Crest Castle in Canada.Although no new Black Falcons-specific sets would be released after that, Black Falcon figures would appear as guests in other sets, such as the Black Knights' 6059 Knights Stronghold (1990) and 6057 Sea Serpent (1992).Thus the Black Falcons were one of the longest-lived factions from 1984 to 1994, the latter when the last sets with their minifigures were discontinued.