Blackrock Foundry. Confusingly not located in Blackrock Mountain like I thought, protip.
Last night we entered the "new" raid for (at least for most of us) the first time. Some had ventured in on LFR mode, but didn't seem to have come away with much in the way of useful knowledge, so our first 10 minutes was spent watching Dentorm die spectacularly on trash and all shouting "omg, what's happening?" and "why can't we sheep that?!" over TS. Seriously, four Dentorm deaths during one trash fight. FOUR. Thank the Noodly Lord Servas can handle himself solo :p