Planet, polaric ion

Class M world of the Delta Quadrant whose humanoid pre-warp civilization had city structures, provinces like Kalto, waterways and aqueducts, and a continental transport system in AD 2371. While in an alternate time loop the U.S.S. Voyager caused an accidental detonation of a polaric ion power grid and destroyed all life there, then helped restore the correct timeline using floating subspace fractures.