This manga provides an easy-to-understand explanation of soil mechanics and geotechnical engineering, where students learn theories for civil engineering design, through cartoons. Our lives are based on the ground. If the ground is not thoroughly investigated and appropriate measures are not taken, problems such as ground subsidence and liquefaction may occur after several decades or even centuries. In other words, geotechnical engineering is such an important and fundamental study that civil engineering, architecture, and social life would not be possible without it. The setting of the manga is a university club called the "Soil Study Group. The members of the club ask questions such as, "What is soil? "What are its properties? "Why does liquefaction occur? and so on, and through fieldwork, they come face to face with these mysteries. (Source: Ohmsha, translated)

Collections of one-shots that won the monthly Hop Step Award from 1987 to 1996.