Intended to be set in the period 1000 years ago, when Equestria was a much more dangerous place and the various historical figures were rising to prominence. Intended to touch on the darker elements featured in G1 and other themes left ambiguous in G4.
Ask any questions here, privately or head on over to the forum thread in the source if this is of any interest to you.
Please drop an upvote and spread this to others who might be interested so I can get this project off of the ground.