Nagelfluh
This rock is mostly used by buttheads in Goldau. It's the kind of stone you slap together like a drunk kid building a wall. It came from a big ol' rock crash at the Rossberg, like someone threw a tantrum and the sky fell.
My uncle used this stone to build his wall, and it looks like a toddler threw bricks at a wall.
Goldau is basically just a bunch of rocks arguing with each other.
This stone is so bad, even the Rossberg fell over just to get away from it.