Debris stretches from the highway to the horizon along old Route 90 from New Orleans to Slidell, LA. Normally this marsh would be green reeds to the horizon. That brownish sludge in the lower right corner of the photograph is what's left of the reeds.
For scale: The little round circle in the lower left foreground? That's a tabletop, like you'd have on a backyard deck. That little white dot in the middle of the horizon? An overturned shrimp boat.