Solar Flare

The sophmore composition of fanfiction author, Dragryphon, it is a direct follow up to Warmth for the Night and was released in three parts in July 2011.

The story, told as an extended flashback that Twilight experiences through the reading of an ancient tome or 'history', chronicles the creation, rebellion and defeat of Nightmare Moon, as well as the events leading up to and surrounding her appearance.

Solar Flare over at Equestria Daily