When visiting Mammoth Cave's Star Chamber, you may feel as though you are above ground gazing at the night sky. Instead, you will be standing 189 feet below this spot. Your eyes will be fooled by light specks on the ceiling where people in the past threw rocks to knock patches of soot from the ceiling.
Ralph Waldo Emerson referred to Star Chamber in his 1857 essay, "Illusions":
"I saw or seemed to see the night heaven thick with stars glimmering over our heads. All the party were touched with astonishment and pleasure."