Nagelfluh
This stone is like the last piece of cake at a party, everyone in Goldau uses it. It's for making walls, and it's so basic, even a caveman could build it. It came from a rock pile so big, it looked like a giant had a meltdown.
My grandma uses this stone for her wall, and it looks like she built it in her sleep.
This stone is so common, it's like the rock version of a potato.
They dropped a mountain on the Rossberg, and it just got annoyed.