Hello!
I´m working into my Day/night cycle of my game, and i have a problem with the lens flares atached to the Sun…
I just see it when the sun goes down the terrain. (here a picture)
Any suggestion? 
Regards!
Nobody?
Just shut it down when Sun rotation > 90. You are anyway should do it if you don’t want a backlight from the ground.
But commonly, colliders should cover Lens Flares. I see your terrain have a Collider. So, don’t know. Try to other colliders for the test. Or maybe something with collision layers or camera culling type;
You should prevent the camera from being able to clip the terrain in the first place.
–Eric