The UnXplained

Season 7 Episode 18: Mysteries of the Underground

Beneath our feet lie hidden ancient tunnels, sacred caves, and shadowy passages into a world of darkness shaped by nature, carved by man, and steeped in myth. Are these underground realms mere remnants of the past?

Genre:

Documentary

Seasons:

8

Episodes:

116

Cast:

William Shatner

Quality:

HD

Duration:

42 min

First Air:

2019

Rating:

6.7