Mark Twain Cave – Haunted Cave System in Hannibal, Missouri
Mark Twain Cave sits beneath the rolling hills of Hannibal, Missouri, drawing visitors worldwide. This limestone labyrinth stretches over 260 million years into Earth’s ancient past. The cave gained fame through Samuel Clemens, better known as Mark Twain himself. He explored these shadowy passages as a young boy in the 1840s. Twain immortalized the cave…