colonization of Earth theme
A permanent alien settlement is established on the planet Earth.
Examples
A well-known archaeologist discovered the site of a hundreds of thousands of years old Martian colony deep inside Africa in "The Retreat to Mars" (1926).
2 total · 1 major · 1 minor
| Story | Level | Motivation |
|---|---|---|
| movie: Man from Atlantis II: The Death Scouts (1977) | major | The two waterbourne aliens came to scout Earth's ocean's as a possible target for colonization. |
| shortstory: The Retreat to Mars (1927) | minor | Hargraves was shocked to discover that Martians had colonized the Earth some hundreds of thousands of years ago. |