Source: Third Era is a "side fic" written by TheMissusD that spans forty-eight chapters and nearly reaches the length of the original novel. Based on the Third Era, or 'Equestrian Dark Age', it in turn inspired its own series of fan-fictions by other authors. It is told in different multi-chapter vignettes. Each vignette is the story of a different character that lived during various periods of the Third Era.
An entire era vanished.
Ponies toiled under the glowing ice-blue of a world that forgot us. Ponies lived into death and obscurity.
But those ponies did live. Lived, and carried on their saddles the hopes and futures of a species, and through the horrors of a frozen and blasted world, helped them grow anew.
These are their stories.