The Forest is a survival horror game that allows you to build all kinds of structures in your base.
However, the guide book given to you to build structures is not complete. There are a couple of blueprints missing and you can find them in hidden underwater caves.
Here’s how you can find all four blueprints / schematics (locations) in The Forest.
Before attempting to find them
Before you begin, you need a rebreather. Here’s how you get one.
Also, you may want to change the graphics setting of the sea to “flat” as it allows you to see the hints clearly.
Location of Blueprints / Schematics No. 1
The first page of the blueprint can be found at a shipwreck cave.
The exact location is shown in the map below, marked by the red circle. It’s the southwestern most area of the map.
You should see an island with a broken boat piece here.
On the island, face the mountain. Look on the surface of the water for a metal pipe with two ropes tied to it.
Once you’ve swam to the metal pipe. Use the rebreather and dive into the water.
Follow the rope / cable down the ship.
keep going until you reach the hole. Press “E” / action button to enter.
Continue swimming until you reach an area where you can surface onto dry land.
Go inside and you’ll find a crossbow, bolts and the schematic you’re looking for.
You will be able to craft a coffin, a church and a cross.
Location of Schematics / Blueprints No. 2 & 3
The second and third blueprints are in the same underwater cave.
First of all, head to the red containers at the beach. The exact location is shown in the map below, marked by the red circle.
It’s the beach on the western side of the map, west of the sink hole.
Go towards the container and continue walking on the beach until you reach this wooden structure (image below).
From the wooden structure, you will see a few islands. Swim towards the two smaller islands on the left.
From the first small island you reach, look towards your left side. You’ll need to swim to find the floating metal pipe tied with ropes.
You should be able to find this metal pipe floating after a distance. If you can’t see it, change your ocean graphics settings to ‘flat’.
From here, use the rebreather and dive downwards.
Once again, enter the cave.
Once you’re in, continue going deeper inside.
Keep going until you are able to surface on dry land. You will immediately find the third page of the schematics here.
It allows you to build a tower. You should also see a rope going downwards.
Continue heading down for the second schematic.
Once you’re down here, just follow the path in.
You will reach a room with many papers pasted on the wall.
The second page of the schematics is towards the end of the room. It unlocks the glider for you.
Location of Schematics / Blueprints No. 4
The last page of the blueprints requires you to go back to the old tree (big tree by the sea).
From the old tree, go towards the yacht.
Once you see the yacht on your right, continue heading straight on the coastline.
This will be a long run / walk. Just follow the coastline.
Keep going until you see four small islands on your right.
Swim towards the second island as pointed out in the image below.
If you’re not sure where the island is, you can refer to the map below.
It’s actually on the southeastern most part of the map.
Once you’re on the small island, look towards the forest.
If you swim towards the forest again, you should spot a metal pipe floating with ropes tied on it.
Once again, use the rebreather and swim into the cave.
Once you’re in, continue swimming downwards.
You should then reach dry land. Keep following the path.
You will then see another pool of water and you need to swim downwards again.
Finally, you’ll reach this small room. The fourth schematics is right here.
It unlocks the log track for you.