Geotechnical engineering is a specialized skill that involves the analysis, design, and construction of structures, foundations, and earthworks. It deals with the behavior and properties of soil, rocks, and other materials in order to understand their ability to support and withstand loads. Geotechnical engineers work to ensure the stability, safety, and durability of structures and infrastructures, such as buildings, bridges, dams, tunnels, and highways, among others. They use various techniques and methods to assess and mitigate risks related to foundation settlement, slope instability, soil liquefaction, and seismic hazards.