Recently I was looking over The Frontier section of the Destiny information page, and I saw something that I completely disregarded the first time I read this section. Under Abandoned Earth, it mentions "the war-torn fortresses of the Twilight Gap". As far as I can tell there has been no concept art of this mysterious place released. Upon further inquiry, the Twilight Gap is apparently visible from a place called "the Overwatch District" in the City. It is also said to have been the place where humanity first encountered the Cabal. Additionally, it is supposed to represent "a big chunk of mankind's history in the game". What could this place be? Perhaps most importantly, what kind of treasures are waiting for us there...