The map flows well (maybe TOO well?). The lighting is a bit too bright and uniform. The crates look a little bit out of place (but I guess we don't have any metal crates that would fit the theme), and the wooden ladders look really out of place -- I'd just make those metal.
I'd make the bases a little taller - it could be really annoying to not get a capture when you jumped over the base and were just a few inches above the trigger.
I'm not sure what you were going for with the fire pyramid things, but they look weird.
With a few tweaks, this could probably be a popular and good looking map. I've put the beta in rotation on the ev1 beta server.