Experts scramble for explanations when a lost back-country skier high in the Rocky Mountains stumbles on a 'monumental complex of structures' -- apparently completely uninhabited.
| Actor | Role |
|---|---|
 Jim HurstSelf | Self |
 Wade DavisNot listed | Not listed |
 Christine DunfordNot listed | Not listed |
 Kurt FullerNot listed | Not listed |
| JJu-Ju JullienNot listed | Not listed |
| BBryan MillerNot listed | Not listed |
| TTom ShaneSelf | Self |