Looks nothing like Azshara crater. Different tileset, different everything.
I read or heard a Blizzard dev talking about the crater BG though. Azshara crater was made, then when blizzard realised how horrible A.V was, they decided symetrical battlegrounds with simple layouts would be the way to go. Azshara crater was neither of those, so it pretty much got scrapped.
More like murlurk.