Larian Studios Forums Divine Divinity (English) Help/Tips/Tricks Troll cave

So I cleared out the troll cave in rivertown near the bridge and I noticed there are two keys .. one composite key is dropped by the leader and the other is in a chest I believe.
The composite unlocks one of the locked chests but I couldn't figure out what the other key is for. Anyone know?

The key in the chest unlocks another chest, IIRC. Check around the cave, and see if you missed any (I believe there is a chest in a corridor to the south, away from the chests in the main room).