Geological / environmental event
The volcano erupts. Ashardalon the Dragon appears. Caerdic faces Ashardalon single-handedly and is killed, but does manage to stop his threat. Eldred defeats the Orcs and wins the fealty of Thistledelve.
Thistledelve. The volcano is erupting! But worse still is what is then seen: Ashardalon the Dragon! Caerdic meets with Eldred and tells him that he will face the dragon singlehanded. Caerdic goes off and does so, but is defeated. However he does weaken the dragon hugely so that he's no longer a threat to Albion. Eldred defeats the barbarians and gains the fealty of the chief of Thistledelve.