- Country: UK
- Genres: Documentary
- Release:
- Director: John Rowdon
- Writers: Norman Prouting
- Language: English
- Stars: John Rowdon , C.E. Dunton , H.J.B. Harding , Herbert Morrison
- Runtime: 39 min
- Awards: N/A
- AKA: A Hundred Years Underground (United Kingdom) , A Hundred Years Underground , Underground Centenary (United Kingdom)
- Plot: N/A
- IMDB:tt2346032