Hey guys, i need help! Im rendering a project with mental ray,

Have a look at the rectangle on the bottom left of the silo.

My problem is, why or what is it? there is no object to cast a shadow of any sort. I've moved objects, changed the ground, changed the lights...! Please im open to any suggestions...

There may be a problem with the snow's geometry like soft normals or something.

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"The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man."

George Bernard Shaw - Man and Superman

hi, im not sure bout your problem im sorry, but im working on an animation involving snow and if u could tell me how u made that snow ground in your image look so good id appreciate it!