User blog comment:Gcheung28/The Hunger Games: Mockingjay Part 1 Trailer Breakdown/@comment-5335202-20140731170503

1. That definitely looks like District 8 since most of District 13 was destroyed and there was nothing on the surface. Plus, the style of the factories looks reminiscent of what we saw in District 8 during the Victory Tour seen in the Catching Fire film

3. That looks like District 7 since if it was the orchards of District 11, the trees would be much lower to the ground and they wouldn't be nearly as tall.

4. I think mostly likely that that is District 13's underground bunkers.