Don't forget, Gandalf also had Gimli with him! [img]smilies/smile.gif[/img]
The stone giants are something of an anomaly. I think maybe they were so low-intelligence/uncaring/irresponsible that they wouldn't have helped anyone in the war. Probably they were like dwarves, and some were decent and some were not. I think Gandalf must not have found a giant to block the cave. Otherwise, they could have gone that way. But perhaps this was unwise for some reason? They may have wanted to avoid coming close to Dol Guldur.
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A Gandalf-uncloaking-free zone.
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