Peridot scoffs, seemingly oblivious to the unstated wryness of the two of them talking about her while she begins construction on another snow mound. "Clay. That stuff's terrible. Do you know how many Kindergartens have failed because they were built in locations full of clay?"

She doesn't know an exact number, but it's probably a lot. It's the only thing worse than red sandstone- at least sandstone holds up. And if clay as a mineral deposit sucks that much, it's probably not useful for 'morp either.