So I got this notification that an elven caravan has arrived and that it has started raining. Pretty normal occurrence. I usually wait until they arrive at my depot before bringing out the goods mainly for security reasons. So I'm waiting, giving digging instructions and watching the depot for their arrival. The fortress is on a volcano so its very difficult to see where anything is. Then I notice that my dwarves are pathing outside and bringing in all sorts of things, all sorts of
wooden things. I looked around and found a pile of equipment, rope reed items, absurd wooden weapons, surface booze, and animals in cages. A pile of elf gear sitting at the center of a spreading circle of fire. There was no reports of combat or anything. Just poof. Gone. Did it get struck by lightning?