We went caving at Ruby Falls, one of the oldest and best known natural tourist attractions in the Southeast.

We walked deep inside "Lookout Mountain" where Mother Nature’s thermometer reads 60 degrees year round.

Here, Jim reluctantly poses with his cave digger's lighted hardhat.

You, too, can take a virtual tour of Ruby Falls, and experience panoramic 360-degree views of Chattanooga and the Tennessee Valley from the highest point at Ruby Falls: the Lookout Mountain Tower.