“Here be dragons” was a phrase once used on ancient maps, often accompanied by mythical sketches, to highlight an unexplored or potentially dangerous area. Astronomers might want to borrow this warning to label the center of galaxies, which contain supermassive black holes.
Hesiod’s description of the ancient Greek dwelling place of gorgons seems to match the mysterious labyrinth ruins of Chavin de Huantar in the Peruvian Andes.