Materials which can be found are:
Thin Vines can be seen hanging down from small sweaty trees, while Chunky Vines are sometimes wrapped around medium sweaty trees. When either of these is felled, the respective vine comes down together with its other spoils.
The hot and humid climate of the sweaty jungle will give the player the Hot Climate effect which drains stamina more rapidly.
Exploring the Sweaty Jungle takes half of a day.