The one laurence pointed out happens to be the only one. All other collectibles will appear at random pretty much anywhere they want to.

That said, the majority of collectibles will appear on or around the rocks where the fire and food bin are located, but that's a pretty big area.
_________________________
Fan Fiction Mentor

Avvie by Airstream Raider
Where have all the Fan Fiction Fans gone?
(I miss Laurence cry)
I miss my wife cry