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The Grimfrost clan is a small clan of ogres led by that inhabit Grimfrost Hill in Frostfire Ridge. They have recently skirmished with outriders of the Frostwolf clan, led by . They've a great hatred for the Frostwolf clan's Frost Wolves, as they can be found captured, dead, and partially eaten all over Grimfrost Hill. The Grimfrost, or at least a small faction of them led by the , also seem to worship the giant lava worm , and will feed him sacrifices when he emerges. The ogres regularly rob Frostwolf orcs and offer them as sacrifices to Borrok.