In the Great Forest just outside the cave with the elementals (one area from Dalos), there is a spawn trigger for some giants that should appear when you come out of the cave or even go near it. They used to spawn once, now they are re-spawning every time you run over the trigger. This happened in a high level party 35 to 38. I re-tested it to make sure it was happening. Got them to re-spawn three times before I left the area.
