Questions on domes

[Viajero]

From what I found here in the forum it would seem, same dome types are not stackable for protetcion purposes although they stay, i.e only one protection check, and if one dome is destroyed the others stay.

1- It follows that I can stack different type domes so if the first type dome check fails the second may save me etc?

2- Is there a way to see what domes are present in an enemy province without having to trying to throw a spell at it first? would a spy show this?

3- Anything that can be done if an enemy throws Flames from the Sky and you have not got a dome?

Thanks!