Mark Twain Cave is 2 mi. s.e. on SR 79 to 300 Cave Hollow Rd. Samuel Clemens immortalized this underground labyrinth in “The Adventures of Tom Sawyer” as the cave in which Tom and Becky Thatcher were lost. The cave has dry, lighted passageways and a constant temperature of 52 F. A 1-hour live show is presented Wed.-Sun. at 3 Memorial Day-Labor Day.