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How do u get the final peice of Alice's evidence?????? Wat do u do in the deep junglE???? PIZ HELP ME IM SOOOOOOOOOOOOOO CONFUSED

you get the final piece of edvince by going through the lotus forest, (I don't remember which trees they are but it is not to hard to find which ones they are)
these trees lead you to a place in the bizzare room, you land on top of the faucet, then you jump from the faucet to the ledge. and collect the last piece of edvince.

first in the deep jungle after the cut scenes go to the camp tent talk to jane collect the slides go back to the camp tent show tarzan the slides he will say it is time to go see kerchack. go to hippos lagoon...go to the end climb the vine. which will take you to vines 2. you will see the gorillas.
for more check out the walkthrough on IGN.
I hope i helped.