Available on Prime Video, discovery+, Telus TV+

S1, E2: A team of explorers discover a cave system riddled with ancient markings; using advanced photogrammetry, experts decode these cryptic scrawls to expose a dark chapter of English history.

History · Feb 21, 2021 · 42 min

Information

Released
2021
Run Time
42 min
Rated
PG
© 2021 Discovery Inc.

Languages

Original Audio
English
Audio and Subtitles
English (United States) (AAC, CC)

Accessibility

Closed captions (CC) refer to subtitles in the available language with the addition of relevant non-dialogue information.