Reflection of Sun on ground

[Dan Routh]

Was shooting a tractor mowing grain today and noticed something I haven't seen before, It was an extremely clear day and I was shooting around noon. Shooting straight down on the green wheat I got a hot spot with the shadow of the Mavic Pro in the center. Thought it was a malfunction at first but realized it was a reflection of the sun off the field. Nothing similar when shooting at an angle to the ground. Didn't realize the sun would actually focus that way. Earlier or later in the day and it wouldn't have happened.

 

[beachcombing]

It's an optical phenomenon.

Heiligenschein - Wikipedia
Opposition surge - Wikipedia

 

[Dan Routh]

Heiligenschein it is I believe.

 

[Robert Granata]

As you get closer and closer to it you will see your shadow in the middle. It is also very useful when you want to divebomb your enemy from out of the sun.