This is a map that Black Ninja is working on - and it's big, as you can tell since BN is visible in the background, just by the last sniping window. You can see this particular fort's lego-style ground below us, and a pool... while the left-mst sniping window gives you a glimpse of the other fort, which is across the sea from us!
The KnC leader mentioned that he hopes to make an Unreal Tournament CTF" version of this map too. I guess some further work is needed, it would certainly help if BN masters the art of the skybox - but there are already teleporters and a neat hidden room...
The screenshot below shows that some added development has taken place, all looking rather interesting!