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Mount Kumgang, North Korea – UNESCO World Heritage Sites
#UNESCO #PatrimonioMundial #WorldHeritage #Welterbe #Philately #Filatelia #Sellos #Stamps #Timbres #Philatelie #Kumgang #MountKumgang #금강산 #KumgangMountains #DiamondMountain #Kumgangsan #DiamondMountains