After The Crusader's Pinnacle (id= 13157) quest, an Orc NPC named Hork Strongbrow (npc=31240) in the tower of the newly phased Crusader's Pinnacle should offer horde players the quest Orgrim's Hammer (id=13224) which itself unlocks 6 other major quests in Icecrown.
Currently Hork Strongbrow is not offering the breadcrumb quest even on a character who has completed Crusaders Pinnacle. This might also be an issue for Alliance players as there is a corresponding alliance questgiver for The Skybreaker quest at the same place, but I don't have an alliance character with that quest chain completed to check. According to evowow's wotlk db the only prerequisite is Crusader's Pinnacle completed.
After The Crusader's Pinnacle (id= 13157) quest, an Orc NPC named Hork Strongbrow (npc=31240) in the tower of the newly phased Crusader's Pinnacle should offer horde players the quest Orgrim's Hammer (id=13224) which itself unlocks 6 other major quests in Icecrown.
Currently Hork Strongbrow is not offering the breadcrumb quest even on a character who has completed Crusaders Pinnacle. This might also be an issue for Alliance players as there is a corresponding alliance questgiver for The Skybreaker quest at the same place, but I don't have an alliance character with that quest chain completed to check. According to evowow's wotlk db the only prerequisite is Crusader's Pinnacle completed.