Moving onwards, Anaris informed us that she had uncovered the main drow camp, a scounting facility with several "Black Pavillions" - It seems that after the capture of Tries, the drow were taking scouting a little more seriously. However, the drow themselves were making regular exeditions with most of the slaves away from their base camp, and leaving the main base 'lightly guarded' while they did so.
We resolved that we should raid their camp while they were out to see if we could find anything valuable to use against the drow, and decided to stop and have a wait near a large tree that was growing in a cavern, fuelled by luminescent fungus.
As with all unusual things, the tree seemed to think our deaths would greatly improve its day, so it attacked us. I guess we really can't trust plant-life underground.