Cultural event
Elves from old world discover continent of Yarklash. They build first colonies spreading in the south east. Dwarfs already have settlements on the continent. Spread in smaller city states in mountains, they are focused on mining. Biggest threat of the continet are titans. They are terrorising dwarfs to live hidden under the earth. The newcomer elves start hunting titans and defeating them, thus taming the land. Without the natural apex predator - titans - dwarfs spread from the moutains, but also dragons and other animals.