rotund disc snail crossing and crawling on the asphalt street.

arthropoda black brown crawl cyanide diplopoda dirt disc discidae discus disk-shaped exoskeleton fauna gastropoda ground invertebrate land rotund rotundatus snail striped terrestrial wild tarmac surface road street asphalt stone dark structure roadway gray pattern bitumen pavement concrete abstract tar rock rough space dirty grey outside coarse sidewalk route gravel