Weird Shadow thing on the bottom of my render (Fixed)

jasjr

I keep getting this weird shadow on the bottom part of this render. The terrain is flat and I have even tried turning off all the lights. Not sure where this is coming from. I would start over, but its part of a full animation i have been working on and I just noticed this and don't know where it came from. If you have any ideas that could fix this, let me know i thank every one in advance.

(Figured it out, it was the sky setting, did not even noticed that at first and spent almost 30 min trying to figure it out lol. Thanks any ways.)