From the back of the book:
A Terrible Evil Lurks In The Bloodsworn Vale
A desperate call has gone out for hardy adventurers to tame the vast wilderness of the Bloodsworn Vale. Monsters of all sorts lurk in the haunted woods, preying upon the brave trailblazers trying to forge a trade route through the valley. If the deadline is to be met, these monsters must be put to the sword, and quick—but rumors abound of an even more dangerous threat lurking nearby.
Conquest of the Bloodsworn Vale is a wilderness adventure for 6th-level characters, compatible with the world's most popular fantasy roleplaying game. This adventure includes details on Fort Thorn and the vast, uncharted wilderness that surrounds the lone outpost. The characters must explore this territory, seek out resources, deal with hungry beasts, and protect the people, if they are to have any chance at success.
The Bloodsworn Vale is located just south of Varisia, the setting of the Rise of the Runelords Pathfinder Adventure Path.