UFO in the ground. Picture taken from airplane.

I was on my flight to Las Vegas from Portland, OR. I was looking out the window and noticed an enormous structure in the distance. I first I thought it was a giant silver bowl in the ground. I figured it was probably a solar power station - the kind that use mirrors to collect solar energy. However, I then realized that it was in the middle of nowhere and had no roads leading up to it. I decided to take a couple of pictures of it ao that I could look it up on google earth later. My phone saves the geolocation information of the picture, so it was easy for mw to look it up once we landed. To my amazement, google earth showed nothing near that area. I decided to run an HDR filter on the picture I took to see if I could a better view of what I was looking at. It looks like an enormous UFO, on the ground, in the middle of the desert.