CAMPSITE 1/3 - SHELTERED RIDGE
Coordinates: [712348; 3416063]
Note: You can't miss it; you'll discover it automatically as you go through the game (Signs of Life).
CAMPSITE 2/3 - FOREST RUINS
Coordinates: [712366; 3416100]
Note: Discovered automatically after reaching the northern part of the forest (Just Keep Moving).
CAMPSITE 3/3 - THE GATE
Coordinates: [712383; 3416130]
Note: Discovered automatically while going through the game as well. Located near the ruins in the northern part of the forest (Just Keep Moving).