4" x 3.25"
Interior is Havre volcano and exterior is Mid-Atlantic rock slurry. As it is with Earth's undulating seafloor it can also be on a potter's wheel. Collapsing clay sometimes (rarely) 'works' as dynamic assymetry. Hearing scientists in a submarine watching an eruption say, "Look the crust is breaking up and reforming!" causes me to grab these when they happen and glaze them with materials from geo-active sources