An emergent story that came out of our game was that the Isir orc tribe in Arina Forest were in conflict with a Alderlander-occupied castle to the southeast. The players established good relations with the noble of the castle, and want to help them with their "orc problem". The players wandered around Arina forest until they discovered the Stoneloom Mines, then are back to orc-hunting.
Since there are no orc strongholds in Arina Forest, I assume they are mostly nomadic tribes that wander about, with war parties splitting off from the the main force for raiding caravans and nearby villages and occasionally fighting with other nearby orc tribes. So I'm thinking of building an Arina forest encounter table that has more orc-focused encounters in it. Then if the players cause enough damage to the Isir orcs they can convince that tribe to stop raiding the nearby Alderlander areas.
Thoughts? Ideas? Thanks in advance!