Address: 7097 County Road 453Hannibal,
MO,
United States63401
Phone: (573) 221-1656
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Description: The Mark Twain Cave Complex boasts America’s Oldest and Newest Show Caves. Mark Twain Cave is Missouri’s first Show Cave. The cave was first shown in 1886 and is a Registered National Natural Landmark.We are located approximately one mile south of Hannibal on Highway 79. To find us click on Maps and Weather on the …