Lookout Mountain Caverns

[citation needed] Its mapped length of 2.481 miles (3.993 kilometers) places it at 361st on the United States Long Caves List.

The opening is visible from "right-of-way boundaries" of the Railway and Interstate 24, although it is widely considered to be sealed inside the tunnel.

The history of the boxes are unknown and have been speculated to have been involved in either Masonic or Ku Klux Klan meetings.

[3][4] A 2005 expedition in Lookout Mountain Cave identified bones that dated back to the last ice age (Pleistocene).

(See Matthews, 2007) The cave was also used as a hospital in the civil war where patients/visitors left 'graffiti' which may include the signature of Andrew Jackson.

[1] An 1869 article appearing in Scientific American notes a cave within Lookout Mountain that extends over 8 miles.

[1] Leo Lambert (1895-1955) was a chemist and natural scientist credited with first exploring Raccoon Mountain Caverns.

His wife controlled the cave and sold it between 1947 and 1949, eventually entering the partial ownership of the Lookout Advertising Company known posting roadside signs.

He says that "exploring of the cave is unpleasant because of the necessity of wading, crawling, climbing, and becoming covered with soot, which coats all the upward-facing surfaces."