Rob Beschizza at 6:46 am Mon, Sep 2, 2013
ADVERTISE AT BOING BOING!
Strange rocks, smelling of chlorine, were found near the Mexican city of Navojoa, Sonora. Weird News reports that Juan Manuel Ramirez Sandoval, an official with the city's civil defense force, said they "don't know what these rocks are."
Perhaps it is for use, somehow, in the shower.