Killed a few myself, but even with the Arrow, and mindvision, and even the scope, could only get 1 at a time. guess the pet is that important.
I went to the spot in the image and then used Eye of Kilrogg to find a safe path in but couldn't find the way.
For Druids without any items to help: Use Faerie Fire to pull, together with the Faerie Fire glyph. Be sure to use it in your normal form, which has 45 yards. The feral version has only 40 yards.
Don't forget it's possible to get their without any help, just use your racing car to make sure you don't enter Hyjal.