Dwarves

About a hundred years ago, the dwarves in Tippitulia were forced out of their underground ancestral homes by the Duergar.

From Monster Manual: Bold and hardy, dwarves are known as skilled warriors, miners, and workers of stone and metal. Though they stand well under 5 feet tall, dwarves are so broad and compact that they can weigh as much as a human standing nearly two feet taller. Their courage and endurance are also easily a match for any of the larger folk.