(covers information from several alternate timelines)
Makull's homeworld was a class M planet in orbit of a red dwarf star, located in the Delta Quadrant. The USS Voyager scanned this planet in 2371. It was inhabited, but lack of an artificial satellite system or nearby spacecraft suggested a pre-warp civilization. The civilization had constructed artificial waterways, a global aqueduct system, and a long-distance continental transport. Polaric energy was used as a planetwide power source.
An accident in a polaric energy plant devastated the planet in 2371. Its civilization was wiped out and its vegetation was destroyed; everything organic was obliterated. It also left subspace fractures floating across the planet's surface. The accident was prevented when Kathryn Janeway reset the timeline. Although these events never occurred, one remnant of this timeline remained: Kes' memories. (VOY: "Time and Again")