A dent in the windshield?!

[Willcall]

So I noticed that my windshield wipers keep missing a spot in the center of the winshield, just below the mirror. So I replaced them, but it still misses that same spot! I looked at the windshield and realized there is a dent in the center of it. It just slops inward! No crack or chip, just a dent. What could have caused this? Is there anything I can do to fix it besides replace?

The two things I have done to the windshield besides cleaning are:
Reglued the mirror button on with the Loctite button glue from Walmart.
Shortly after, replaced standard mirror with electronic Auto Lamp mirror

Any help is appreciated!
-Will

 

[4rd4life]

dude thats a tricky one lol i wouldnt know of any other fix but to have the glass replaced