I concur with these two quotes.

I absolutley do not believe in a "void" area other than, behind the lungs and over the liver/under the spine, it's a very small area but you are still going to damage the diaphram. NO ONE, I repeat, no one can offer up a photograph showing a void. All anatomy photographs I have seen prove the lungs push up against the backbone.

I've cleaned a few whitetails in my 25 years of bowhunting, I never once remember feeling a pocket over the lungs, in contrast, the lungs are always up against, even on a animal on it's side, hung up or turned on it's back.

Two examples:

http://home.mn.rr.com/deerfever/Anatomy.html

http://forums.mathewsinc.com/viewtopic.php?t=21358

If you send a broadhead high just under the lungs, you will catch at least one lung on said animal. (One lung, I cannot tell you right of left, is larger than the other) I will not believe otherwise. Do I think this kills the animal....NO, not every time. In the book I have read on "Blood Tracking For Finding Wounded Animals" by John Jeanenney there are pictures of healthy animals that were taken by bowhunting on an Island in NY. They then did autopsy's on the animals and there were cases where there were lungs with scar tissue on them. I firmly believe you can damage a lung and not deflate it, or cut enough blood vessels to cause bleed out or hemorraging which is what's necessary for a broadhead to "Kill".

Broadheads kill by hemorraging, even in the lungs which usually causes them to deflate, or the deer to drown in it's own blood etc....etc...

You cannot slide a 3 blade broadhead under the spine and not catch the lungs, unless your forward or back of the lungs. A two blade, perhaps but the odds are tremendously against this. Don't forget as well, the major artery that runs along the spine and the spinal cord itself.

Like was said, I am a firm believer that many people don't know the antomy of the game they are chasing or what the so called "void" area is by examples set already here within this thread.

As you go up and back on the lungs the blood vessels reduce, the majority of the oxygen carried into and from the lungs are from the middle forward, but again, can you send a broadhead through the lungs and not deflate them. Yes I believe that is possible. Can you send one through without hemorraging the animal to death, yes, I believe that is possible becuase I believe to many hunters don't use brand new blades or blades that are not as sharp as they should be. I believe there are bowhunters who take shortcuts and then say they hit a void area because they either did not do things right for the shot or after the shot.

I've hit animals in this area people assume is a void area. I know that I had to catch the top lobes of the lungs but I did not damage them enough to cause the death of the animal. If you want to call that the void area, you go right ahead but I believe you are spreading a myth and an excuse for the next guy. Some deer will die, some will not and I use GregH's photo for an example. We all look at that photo in disbelief but I for one say hey, whitetails are amazing, they are survivalist.