Then jump, slide and rope yourself down to the first camp. Treasure #18 is here.
Then find the dynamite. It is not far from a shut door. Blow it up with the dynamite.
Hostiles heard that and will arrive in a bit.
A bit further up, there is a big yellow box. This box needs to go into the room of that door you just blew up. To do that, blow up that door next to the yellow box too. Then pull the box into the said room to climb up to the roof.
There is a rope point up there. Use the rope and swing onto the ledges on the other side. Climb up. There is another rope point up there. Use it with the rope and swing to the ledge to the left.
At the top use yet another rope point to swing into the opposite direction and grab a ledge. Climb up. Sam will help you. At the top, slide down some gravel. Stop and right onto the next gravel with a jump to the ledges at the bottom.
Climb to the left and you'll see 3 hostiles. You can drop on one and then do a team attack with Sam on the other two.
This is a hostile area.
The path continues on top of this camp / building. There is a ledge you can climb to the right.
At the top, use the rope point (R1) to swing to the ledges on the other side.
On the other side, slide down and get rid of the hostiles.
Get past the two gravel slides (see video) and you're in the next big area with pillars and ruins.
Then follow the path up. When you're out enter the cave and open the big door.
#16 Redware and Silver Jug Flask
At the start, up the hill. There is a little gap. The treasue is lying on the floor
#17 Bronze Boar
At the start, downhill in a little cave next to the cliff
#18 Carved Wood Kashkul
In the camp there is some equipment at the cliff. The treasure is behind.
#19 Carved Nut Bottle
In the first camp, after you climbed up the roof with the crate, there is a little gap blocked with boxes. Blow those away with dynamite and get the treasure behind.
#20 Traveling Inkwell with Seal
After the two gravel slides. The area with the pillars, bridge parts and ruins. There is a little cave on the right side at the edge of the cliff.
#21 Carved Ivory Vanitas
Before you enter the cemetery with the big wooden door. Climb up next to the wooden door to reach the roof.
#22 Scottish Ha'Penny
In the main chamber of Henry Avery's grave there is a little corridor with a statue. The coin is on the bottom of the statue.
#23 Slipjoint Clasp Knife
After the grave, you climb up to the cave. After a rope point, in the area where you meet hostiles again the first time after the graveyard, there is a little cave to the left. You'll find the treasure in there.
#24 Pewter Singing Bird Box
In the same area as #23, just higher up. Jump over the gap to reach the cave.
#25 Tortoise Shell Snuff Box
When you get up to the first cross, go to the left and climb down to the area, where Sam went through.
#26 Persian Tailoring Scissors
In the pirates' cave. Where the ship wreck is at the bottom. Under the staircase.