Where is 2 and a half miles down river from Hannibal, Missouri.?

Answer 1

On the Missouri side of the Mississippi River, you'll find Cave Hollow at about this location, the site of the caves that were described in Mark Twain's "The Adventures of Tom Sawyer" and "The Adventures of Huckleberry Finn." Follow a tributary inland a bit and you'll come to the so-named Mark Twain Cave itself.

Answer 2

go to mapquest...