the.com/eggshell
a fortress one chick can demolish but a grown human cannot crush end-to-end.
crush tricksqueeze the ends; the dome geometry survives bare hands
breathing wallriddled with up to 17000 microscopic pores
mostly chalkabout 95 percent calcium carbonate, like limestone
garden goldcrushed shells deter slugs and feed soil
paint nameits soft sheen named an entire finish