On-site filming by Otto Sieber and his film crew as they staggered down the ruined slopes of Mt. St. Helens. Combined with additional film shot before, during, and after the eruption.
| Actor | Role |
|---|---|
| DDon RileyNarrator | Narrator |
| VVern TaylorNarrator | Narrator |
| OOtto SieberClimber | Climber |
| AAndy SternClimber | Climber |
| BBrian WittClimber | Climber |
| RRussell JohnsonHiker | Hiker |
| MMike LienauHiker | Hiker |
| DDale PetersonHiker | Hiker |
| JJoel TurgesenHiker | Hiker |