I have never seen a snake like that! It's almost like it is a hybrid or bred to have such patterns??? very decorative that snake is.
Bubbles has a snake book so maybe she can find something.
Are you finding these snakes at your house? You mentioned camping. Winnsboro is not very far south of me, I'm north of I-30 in Dike, Texas.
But that head laying their confirms my theory..........chop it's head off first and ask questions later!!! Yikes.