I saw this movie probably 8 or 9 years ago. It was a 2000’s horror movie and I think I remember it being pretty popular.

Okay, so there were a bunch of young adults, like a group of friends, around college-age, I think they were going to some kind of event (reminiscent of Texas Chainsaw Massacre and the Lynyrd Skynyrd concert). They stop and camp (I think there was a bonfire) for whatever reason, and a truck pulls up on them and shines its headlights at them. Someone throws something and I think they broke out a headlight ? I want to say it was like a macho-man type of guy who threw it ? Anyway, the truck leaves but eventually either comes back or runs into them later. At some point they are doing something (like running from someone or something, maybe ?) and start to smell something awful. It ends up being a pit of dead bodies I think. Somehow one or two of them end up riding in a truck, I think it was the one that I had mentioned above, and see something suspect, like blood or weapons, and they suspect that the driver is a ‘bad guy’ but he’s actually a just a hunter.