The tour guide was the best part. He was very informative, charismatic, and friendly. However, I did not realize that there were multiple tour locations and assumed this was the one I had taken about 23 years ago. Compared to the one I took before, this one was very short with not much walking through the tunnels. The tour was partly above ground and mostly involved talking. Again, the tour guide was great, but I was really looking forward to walking quite a while in the underground like I had before.