Multiple realities(covers information from several alternate timelines)
The Garenor homeworld was an inhabited Delta Quadrant planet. It was the homeworld of the Garenor. In 2374, USS Voyager passed this planet.
Three weeks later, Annorax used his weapon ship on this world in a successful attempt to remove the species from history. All organisms and structures on the planet were eradicated.
The effects of this timeline were negated when the weapon ship was deleted from history. (VOY: "Year of Hell")