They are all in the area known as Coastal Forest. Although that area is split it into two different sections. You can tell where you are by looking at the map. But yes they are in both areas.
Its also a great feature in this game that I don't think I have seen in many games at all. You cna fast travel back to any camp fire at any time so you progress to the next level you are free to go back and collect things at any time.