Divination: Gorefiend's Armor

In life, Gorefiend was a monster, but in death, Gorefiend was an unmitigated terror.$B$BTo the southeast you will find Netherwing Ledge. What was once part of the mainland of Shadowmoon is now a floating island in the sky.$B$BVhel'kur, spawn of Deathwing, once called it his home, but now knows it as his grave. He flies an endless circle above the island, seething at his defeat to Gorefiend.$B$BIf you are to recover the Gorefiend's armor, it is Vhel'kur that you must defeat.