Hypogeans are beings or entities that dwell underground, often associated with subterranean environments. They are commonly depicted in various mythologies and folklore as creatures that live in caves, tunnels, or other hidden places beneath the earth's surface. The term can also refer to ancient civilizations that built extensive underground structures, such as the Cappadocia region in Turkey. In modern contexts, hypogeans can be linked to themes in literature, video games, and movies, where they are portrayed as mysterious or dangerous beings. These representations often draw on the idea of the unknown and the hidden aspects of the world, reflecting humanity's fascination with what lies beneath our feet.