I hunted both LoC the -1748x-368 and the -1000 to -2000x2500 to 3000 for more than a day. I looked durring the day and durring the night. I foraged skill 200 and looked for ground spawn. I never saw or foraged even one piece in BB. Whats up with this Dang stuff.
It is a ground Spawn in BB. Foraging won't help you any. Take a look around for something like a small green leaf, when you see it, click it and you'll recieve your oak bark.
If you wish to forage for it, head to Kithicor or Wasilisk.
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Man once said to the universe: "Sir! I exsist!" "Yes, however," Replied the universe, "This fact has not created in me, A sense of Obligation." ~Stephen Craine; War is Kind