sorry to say nobody was close to guessing what was making the shadow but that doesn't mean there were no winners.
of course there are winners and here they are:
1 HBD to 
It's a slider, from a children's playground.
Every child that ever used this slider pooped their pants when they arrived home. No explanation, it just was this way.
nomination to pixresteemer's rehive contest goes to:
don't miss the christmas special contest. here's the link
@eolianpariah/guess-the-shadow-contest-christmas
see you there
and be sure to check out the other community contests:
@melinda010100/shadow-hunters-smash-contest-round-cf31980cf52aa
and