Today, engineering geology as a science and engineering-geological surveys as the practical application of this science are in stagnation and even in decline. This is evidenced by a number of events and facts that have observed over the past 30 years or a little longer. Is it possible to reverse the situation, to return an understanding of the primary importance of Engineering Geology in the economic development of the country to the relevant authorities, customers, and heads of construction universities? Of course, yes. And this must be done. Because otherwise, accidents at important critical facilities will occur more and more often, and the cost and construction time will be steadily increasing with simultaneously decreasing the reliability of buildings and structures. However, this is impossible without understanding how the things were before. In connection with the approaching centenary of Engineering Geology, we talked with Igor Vladislavovich Dudler who is one of the luminaries in this sphere and who was awarded by the Sergeev medal “For contribution to the development of Engineering Geology”. He told us about the history of Engineering Geology and put forward a number of proposals for necessary changes in our time in this sphere.