That is one of the coolest photos I’ve ever seen!
There are others online that might offer a better view of the pork, but they're on Flickr and have linking disabled. Neat pics, though... the town of Mansura either either built or converted a metal-framed pole barn into a walk-in, drive-in barbeque pit!
Louisiana law actually has food handling provisions specific to "cochon de lait", due to the fact that most of these events are smaller in scale and cooking is done in an earthen pit filled with glowing embers. Mansura does it with a bit more style.
Gotta love the "pit boss" in that photo. I'd bet that he has no sappy "Coexist" bumper sticker on his car or truck.