Am I Talking To Myself?

When a group of friends go camping into the woods, they have a splendid time, until one of their group member disappears. That's when everything goes downhill. Instead of bonding with one another, they turn on one another.
*
limbs of animals hanged on each branch, and the smell of rotting flesh took over. Flies were heard buzzing from above as I walked on through the endless trails of trees.

I then heard a girl weeping from beyond, her voice was hovering over the flies, and I became skeptical.

"Did you guys hear that?"
I said. I didn't look back at the others. Funny, none of them responded.
"Am I talking to myself guys?"
As I turned around, they were gone...