formation?

This may be silly but I have no idea what causes this and it is just so odd. Some will have weird looking pieces in it or round holes where pieces are gone. It's all wavy and there is a lot of this red in most. I assume from the clay. I'm just curious. If anyone can offer ideas, I would love...

I found this and I am just wondering if there could be something underneath, like the pea under the matress so to speak or maybe just a natural formation. It kinda looks like little poo-poo lol. About 1 inch wide and 3 inches long. Any ideas, I dont want to keep trying to remove layers if it...

Found in father in laws yard looking for opinions and a geologist! I am in michigan