In Shadowmoon Valley on Netherwing ledge, there is a shortcut you can take in the mines if you are doing the quest: "Dragons are the Least of Our Problems". You need an epic flyer to do this quest.
Go in about 50 yards until you see on your left the upper level. If no one has killed them, there we will be some mobs roaming around. Run up the side of the wall until you hit the fence. Target one and charge, intercept, w/e. You might even be able to blink. Now instead of a 3 minute run and at least 2 minutes of fighting mobs it takes to reach this area, you can get to the ravagers and flayers very quickly.
I found this out when I ran by and aggro'd one. I intercepted it and ran right through the fence. I tried running and wall jumping with no success.