Bori of the Iron Garrison thinks the Angmarim may have hauled the Black Stone Anvil out of Gloomingtarn, and if you hurry you may be able to find and retrieve the ancient artifact before they do it some harm.
'Bori believes it must have been hauled on ropes north to Clovengap, although the purpose for which the cultists would put it remains a mystery to him, and to me.
'Hear him and see if you agree.'
Bori is waiting by the lakeshore in Gloomingtarn for you to agree to his plan.