Marc Guggenheim Posts Coast City Production Art

Arrow Executive Producer Marc Guggenheim posted some “Coast City” production art on Twitter today.

Coast City is where Oliver will inevitably end up in the flashbacks… though sadly, Coast City’s most famous resident probably won’t be showing up. His “Blackest Night” motto, however, does show up, in a variation.

Not The Lantern Season 4 premieres October 7 on The CW.