mysterious maker alien race theme

A long gone alien race that left behind a creation of some significance, for example a grand technological construction.

Examples

A mysterious maker alien race left an asteroid deflecting obelisk on the planet Amerind in tos3x03 "The Paradise Syndrome".

26 total · 7 major · 19 minor

StoryLevelMotivation
movie: 2001: A Space Odyssey (1968) major Aliens left mysterious black monoliths on Earth, the Moon, and in orbit around Jupiter for hominids/humans to discover.
tas1x01 major Ancient Insectoid Species :: spaceship making insectoid race
tas1x09 major Caretaken Aliens :: amusement plant makers
tas1x14 major Slaver :: stasis box civilization
tng1x21 major Minosians had left behind them planet wide autonomous weapons that killed visitors.
tng2x11 major Iconian :: Iconians
tng6x20 major Primordial Humanoid :: humanoid seeders of life
bbf1x18 minor The makers of the planetary-scale machine.
bbf1x19 minor The makers of the planetary-scale machine.
movie: Supernova (2000) minor The Nightengale 229 crew discovered a mysterious alien artifact that was found to contain nine-dimensional matter.