Agoraphobia

As with fear of falling, this may represent an actual fear. But as a symbol it means a fear of being exposed, of being seen, of possible attack, and of having nothing to hide behind or under. In general it is about anxiety. See: Anxiety.

Useful questions are:

What is it I am afraid of if I am in the open?

What might happen if I am exposed?

Is the fundamental fear that of death or something else?