I'm not sure how to put this question exactly, but here's the problem. I have a scene that I wish to show from a top view. Imagine, say, a tunnel. The problem is that when an object technically exits the tunnel, it's not quite yet visible from the top because the viewport perspective causes it to remain hidden. Essentially, I want to convert the 3d image to a 2d projection I suppose. Is this possible at all? Would it be a field-of-view issue?

Thanks for any tips -- I could really use some assistance on this one...