If you visit Fogbough before completing all prerequistes, you receive this message:
You must first complete certain events in the nearby town of Ashlyre before you can explore the forest. To be able to access Ashlyre, you need to have completed the 'Caves of Westwold' adventure in Hawklor and the 'Murk' in Stormfield.
If you visit Fogbough Forest with a non-AG character, you receive this message:
To explore Fogbough Forest you will first need to upgrade <Your Character Name> to Adventurers Guild status.
Only thin, sickly strands of light penetrate this part of the cursed wood. An ankle-high blanket of thick grey fog swirls across the soft, uneven ground. Now and again, far off through the shadowy, decaying trees, the haunting cry of some strange bird breaks the eerie silence.
Standing in the centre of the cave, you stare in wonder at a series of intricate engravings chiseled into the rock. The engravings depict several fur-clad humans standing amidst a large pack of wolves. The tallest of the humans is garbed in various pieces of attire that almost serve to give him the appearance akin to the wolves standing at his side...
"I'm certain you would have been summoned before now," says Izeyla as the two of you pause to allow the portcullis to be raised, "but I think our Lady wished her court to be in order before she hosted such a revered guest...I think you'll be surprised by what you see..."