Right at the start of the chapter, there is a ledge to the left...
59 - Brass Ewer
After sliding down and discovering the first train tracks you get to a waterfall. The treasure is underwater, right in front of the waterfall.
60 - Mamluk Brass Bowl
After the waterfall, climb up and go trough that underpass to the little river slide. The story continues, if you climb up straight ahead. But to get to this treasure, slide one further down. There's a climb spot to the left.
61 - Crescent Flask
After the swing you get to a metal fence. Don't climb over yet. The treasure is in the right corner of this area.
62 - Soapstone Jewelry Box
Before climbing up the rope and get to the first encounter in this chapter:
You can drop yourself down on the left of the ledge and climb up to the left to get the treasure.
63 - Peacock Nut Cutter
After the first encounter in this chapter, Chloe slides down a couple of times to get to this green patch. There she can climb over the path she slid down. Here, instead of continuing to go up, go down again onto a little ledge.
64 - British Powder Flask
After climbing up the cart and Shoreline crate: Up there, go back into the tunnel. The treasure is where Sam climbed up and crushed the rope ladder.
65 - Strange Skull
After climbing up, to the ledge, where Sam needs another rope to swing. The treasure is right underneath. Use the rope to swing back towards Sam and Nadine to land on the ledge underneath to pick up the treasure.
Photo Location 1
After the first encounter in this chapter, Chloe slides down a couple of times to get to this green patch. Make a photo of the train.