Head southwest toward Sapstrath Deepwood and climb up the first level to get the chest with 12600 Gald and then hop down and head north to climb the vines up and zone to the North Branch.
There are three chest in this area: one is in a hole on the south side of the northwest plateau containing Venomous Stinger x2 , another is in a hole in the northeast corner of of the eastern plateau with 9600 Gald inside, and the final one is in the southeast corner and contains Rare Metal x2 .
Backtrack to the Southwest Region and exit to the Northeast Region. Hug the north wall to reach the vines and climb up the plateau, where you can find a hole on the left with a Monster Fluid and a chest in the north corner containing a Chimera’s Mane . You can now exit to the northwest into Sapstrath Seahaven.