This is just a quick guide to making a ton of gold mining in hyjal. Right now in hyjal there is a cave spawning 1-2 at almost all times, once you mine them a few more appear almost instantly. Now before you tell me that a guide telling you to mine a cave isn't special or anything keep in mind that a few days ago ore was not spawning like this, atleast not from what I saw when I previously went to this cave.
Anyways here is a link to the video I made on this spot
and here is an SS of the caves location
http://i54.tinypic.com/2llni13.png
I have made over 5000g in this spot in just a little over an hour, and I was being camped for a portion of that time.