The giants of the Avalanche Enclave have terrorized the surrounding regions for decades, preying on trade caravans, defenseless communities, and tribes of other creatures throughout the mountains. The group formed from several disparate tribes of giants brought together by a legendary stone giant warlord known to locals as Rumble.
The Enclave has been at war with the dwarves of Clan Mithralfist for nearly a century. However, the giants recently started gaining the upper hand in the conflict with the inexplicable arrival of extraplanar allies such as genasi, elementals and devils. The Enclave have put the Mithralfist dwarves on the brink of destruction.