Three strangers push themselves to their absolute limits in complete darkness – enduring days buried underground while navigating prehistoric cave systems, ancient subterranean cities and centuries-old abandoned mines. Are you afraid of the dark?
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Cave of the Seven Serpents | 2017-08-02 | 60 min |
| Season 1 | Episode 2 | Forgotten Tomb | 2017-08-03 | 60 min |
