We went in via the Natural Entrance which wound down 750 feet in a little over a mile. Leo was amazing and walked the whole time, and then half the Big Room. One of the things that I HAD to do while we were there was eat lunch at the snack bar, 750 feet below the surface of the Earth. I mean, really! How many times can the average person do that? And my lovely husband played along with my request and bought a $7 pre-packaged salad and a $5 container of fruit, so I could eat down there.