A framework for recognising the important geotechnical features of the various geological environments: namely igneous, volcanic, metamorphic, sedimentary and carbonate. Superimposed onto this stratigraphic base are the overprinting effects of geological structure and environmental effects including stress, valley bulging, tectonic setting, glaciation, weathering and alteration; and Holocene geology. The lectures cover the continuous spectrum from soil to high strength rock. Geomorphology, the surface expression of the underlying geology and geological processes is a key part of the course. These elements and relationships are brought together within the umbrella of modern engineering concepts such as Total Geology. The final section of the course and probably the most important deals with geotechnical engineering models, what they comprise and how are developed,