So far the best place I have found to farm this is in the two big fields to the left and right side of the Temple of Karabor in Shadownoon Valley.
Nice clustered groups of Rockhide mobs roaming around, so you can run around and even pull a couple at a time. Also a lot of fur to be gathered along the way which is nice.
Good also if you are not max lvl yet as these are just lvl 90-91.
The fields at 61, 51 in Shadowmoon Valley. West of Temple of Karabor.
There are packs of 3+ Eleks, I was averaging one meat drop per 4 kills, which did not take too long considering they were leveling 90-92.