"Bonington's Secret Mountain" is a documentary about alpinism that takes place on Sepu Kangri. It was directed by Martin Belderson in 1999 and produced by Northern Films. It features Chris Bonington, Charles Clarke, Scott Muir, Elliot Robinson and Graham Little.
| Actor | Role |
|---|---|
 Chris BoningtonSelf | Self |
| CCharles ClarkeSelf | Self |
| SScott MuirSelf | Self |
| EElliot RobinsonSelf | Self |
| GGraham LittleSelf | Self |
 Jim CurranSelf | Self |
| GGreig CubittSelf | Self |
| VVictor SaundersSelf | Self |
| AAllyson BairdSelf | Self |
| AAnjay Khatri ChhetriSelf | Self |
| DDerek MuirSelf | Self |
| CChristina WoodrowSelf | Self |
| AAnne MuirSelf | Self |