Cities of the Underworld (2007)
| First Air Date: | 2007, March 2 |
| Last Air Date: | 2021, October 26 |
| Status: | Ended |
| Seasons: | 4 |
| Episodes: | 48 |
| Episode Runtime: | 43 min |
Overview:
Don Wildman travels to the farthest and deepest reaches of the globe, using cutting-edge technology to explore mysteries buried deep underground.