The Robinson men discover an underground civilization while exploring the planet. Will wakes a sleeping princess who wants him to remain and rule with her.
| Title | The Lost Civilization |
|---|---|
| Genres | Sci-Fi & Fantasy Comedy |
| Release Date | 1966-04-13 |
| Episode Runtime | 01 Hours 00 Minutes |
| Season Number | 1 |
| Episode Number | 27 |
| Production Companies | Irwin Allen Productions, 20th Century Fox Television |
