The book's approach is multidisciplinary, integrating insights from architecture, engineering, social science, and economics. It begins by introducing subterranean urbanism, then delves into technical aspects like geological surveys and structural engineering, as well as the psychological effects of underground environments. Finally, the book examines economic and regulatory dimensions, presenting case studies and recommendations for future implementation. This comprehensive examination challenges conventional thinking and proposes a new paradigm for addressing the challenges of urban development, especially as surface-level solutions show their limits.