Foundation Engineering Expo will discuss various problems related to the ground, such as alteration of foundation pile construction data, poor ground improvement, and the collapse of roads during construction caused an uproar. Underground measures, unlike superstructures, are not visible from the outside, and ground technology is an area that still has many issues and room for technological development. Therefore, in recent years, many developments and practical applications have been progressing, such as the development of new construction methods, as well as the development of technologies for visualizing ground information and improving construction quality control. In recent years, natural disasters, especially ground disasters caused by heavy rains and earthquakes, have occurred frequently throughout the country. As further disasters are expected in the future, technologies for disaster prevention or foundation work, ground improvement, etc., which are the basis of such disasters, are important, and further advancement of the technologies themselves is strongly desired.