The Far Cry 6 High Supply Air Drop also unlocks the M16A1 Rifle; hence it is mandatory to reach it.
Similar to the previous Treasure Hunt (Ida’s Triada Relic), the High Supply mission mainly focuses on exploration and testing Dani’s skills.
Far Cry 6 High Supply Treasure Hunt Guide
The High Supply Far Cry 6 Treasure Hunt starts northeast of Verdera as you can see on my map below.
As usual, to trigger this mission, you’ll need to find the note in the orange box.
In this case, the box is found next to one of Castillo’s soldiers who tried to reach the Air Drop and miserably failed.
Read the High Supply Note left by the True Yaran, then get ready to climb the mountain.
Far Cry 6 High Supply: How To Reach The Air Drop Supplies
To get the AirDrop Supplies in Far Cry 6 High Supply Treasure Hunt, your goal is to ascend the “not so small” mountain behind the corpse above.
So start climbing the first ledge, then the one on the left side.
Now keep following the path on the left until you reach the mountain wall in my screenshot.
Here as you can see, you have two Grappling Points.
Use the Grappling Hook to move from one point to another.
In the next area, follow the linear path and cross the blue planks, then you’ll enter a cave.
Use the Grappling Point on the cave’s upper wall, and then you’ll reach a gap.
Here you’ll want to turn left to spot some ledges you can climb.
From the upper ledge, jump on the other side of the tunnel (right side), then push forward and turn around to spot another ledge on the left side.
After you jump, drop in the cave below and use the next Grappling Point.
While swinging, connect to the second Grappling Point, then detach while above the ground.
Now, you’ll want to repeat the procedure on the following two Grappling Points and exit the cave.
If you are stuck, make sure you melee the vines.
Once outside the cave, turn left, climb the vines nearby, then grapple again.
In the next area is a large gap that can be crossed by grappling and detaching when you reach the other side.
Climb the next vine, and you’ll get to a dead end. This is the trickiest part of this Treasure Hunt.
As you can see in my image above, to get to the Far Cry 6 Air Drop Supplies, you have to destroy the red net on the mountain’s wall.
This action releases the stones and clears the path ahead. Shoot it or set it on fire.
After you release the stones, climb the next three ledges, and you’ll reach the Air Drop (also pictured).
Get close to the Air Drop, and secure it to finish the Far Cry 6 High Supply Treasure Hunt and unlock the M16 A1 Standard Rifle (see how to get all Unique Rifles here).