Do you see the Bigfoot above?
Keep studying it.
Shadows and light - where is it?
It's not there. But, had there been a Sasquatch in this photo, his details would be utterly lost in that mass. He will not come out and pose for you. He does what he does best - hiding in the shadows, blending into the surroundings, hoping you don't notice a shape or a movement, and knows you can't see the details.
I guess the question isn't, "how are their blobsquatches?" but "how could there not be blobsquatches?"