Trailer 2 Dome Image Questions

Some questions about the newest Alien: Covenant trailer holocaust shot:

Is there a relatively tall fence around the central dome?

Inside the fence we can see the buildings of a city? Is that area a forbidden place?

There are three statues outside the fence. They seem to show humanoid creatures in sitting position. What about the other structures outside the fence? The one on the right seems to be intact. Is that a huge column? The one on the left seems to be destroyed and its four pieces can be seen among the creatures. Is that true?

I think there are two kinds of creatures in the field: a taller Engineer-like species and a smaller human-like species. Do you agree?

I think these two species fight/fought with each other, we can see a battle scene. The holocaust act happened during the battle. Do you agree? I believe we can see a kind of rebellion against the ruler species. Were the smaller creatures slaves?

The close-ups show the smaller creatures in my opinion. It was underlined by other members that these bodies are burnt. But the pieces of their clothes seem to be relatively intact. How is it possible?

Thank you for the answers.