To get past the river, you have to build a raft. Collect logs and get some ropes and go to
the river. In front of the water it tells you to build the raft there. You cant carry all
the logs at once so take at least 2 logs and carry as many ropes as you want, to build the
raft. It takes about 12 logs and about 13 ropes. Then keeos going back to build the raft.
Hope this helps