Difficulty: Medium
Reward: 780 XP
Once you’ve entered the cave, drop down into the water and head left, away from the waterfall. Once you see a point to climb, use it. You come across a small camp of Udam containing two Archers and a Warrior. Use your bow, and take the one farthest from the fire out first, then look left and take the other two out before they notice you.
After a brief moment outside looking over the water you swam through at the beginning, you come across a cave with a small fork. Both point at the same stretch of water.
From the left side of the fork you can use the above grappling point to swing to the platform on the right side. Be careful! If you touch the water while swinging you immediately lose your hold on the grapple.
You can also swim across the water, through the gap between the two platforms, before locating a climb spot hidden on the back side of the right platform. Either way you choose to go, it is best to kill the Bitefish before swinging or swimming to avoid taking any unnecessary damage.
Once you are on top of the right platform jump the small gap to the other platform and follow the path to another body of water. A Red Leaf, two North Yellow Leaves, and North Black Rock inhabit this platform; grab them before moving on!
Stay underwater and follow the stream until it dead ends behind a small Udam camp. Climb up into the camp. Five enemy Udam inhabit the camp: three Archers and two Spearmen. You can either use your position to take down each enemy with a bow, or use the bushes and cover to move through the camp onto the next area. If you alert them to your presence, quickly jump into the water and dive down to ditch them.
Head though the camp toward the next way point where you will hit a wall. When facing the wall, look left for a small rock ramp that you can climb up, this is marked with an Eagle Cave Painting.
Once on there, look up, and slightly back toward the camp and you will find a grappling point.
Hold (R2/RT) to pull yourself up and prevent from touching the water. Now you will need to swing yourself back and forth (Left Stick) and throw yourself over the small wall that was blocking your progress.
Once in the water on the other side you will swim through a small tunnel. Quickly swim left to the small ramp! Three Bitefish and one Crocodile inhabit this water making it a very dangerous place to spend more than a few moments. Since you are already out of the water, you will not need to kill these creatures unless you want their resources. Follow the ramp up to the small bridge, do not cross it and stay along the wall.
This will eventually lead you into the water. Continue swimming through the water, staying under to avoid any Udam in the camp noticing you. Be sure to use Hunter Vision as a Crocodile is waiting near your exit.
If he is in the way you may need to retreat back to where you came and use a spear or bow to take him out.
If you’ve stayed along the wall this whole time, you go up a small ramp that leads to the left side of the waterfall, from there all you have to do is swim straight through a small body of water and you are free from the cave.