Dark time
From Halopedia, the Halo wiki
This article is about a Forerunner time period. For achievement in Halo 3: ODST, see Dark Times.
The dark time is the translated name for a period after the reintroduction phase of the Conservation Measure. It was a time in which some of the species that were reintroduced into their homeworlds by the Forerunners became extinct.[1]
