Entrance
Entrance inside Orgrimmar's Cleft of Shadow; no meeting stone in 1.12 (inside a Horde city).
Loot and attunement
Forever-wide dungeon changes (not stated per-dungeon): Blizzard says 'Every dungeon drop has been re-examined... hundreds of new drops have been added. Unique dungeon boss items are now blue quality' (Official); dungeon mob-kill XP 'brought way down', dungeon quest XP 'much, much, much higher' (Kris Zierhut, Confirmed interview); Meeting Stones do not summon, they open a Looking for Group tool (Kotaku interview).
Description
Lava cavern beneath Orgrimmar held by Burning Blade cultists and troggs.
Forever evidence
No Blizzard statement names this dungeon. Warcraft Tavern's Forever guide: 'World of Warcraft Forever brings forth all Classic dungeons, alongside 9 new' and lists it (third-party).