River into Darkness (d20)
A vast merchant consortium has a simple job for you - one that pays extremely well. All it asks is that you stand guard over one of its outposts for a few weeks until reinforcements arrive. The problem¸ of course¸ is that the outpost is in the middle of a vast and dangerous jungle and the natives seem intent upon putting an arrow in you at every turn. If the journey there doesn't kill you¸ though¸ you might just learn what is worth risking your lives over.
"This adventure includes all in information you need to send your heroes on a fantastic journey through the heart of the deep and mysterious jungle¸ including encounters with terrible monsters and hostile natives.
"This adventure is set in the Mwangi Expanse¸ the largest jungle in the Pathfinder Chronicles Campaign Setting¸ but it can be easily adapted for use in any setting. For more information on this environ¸ check out the Pathfinder Chronicles Gazetteer.