Formerly out of print and unavailable for almost 20 years, this book has remained the foundational text on sandplay psychotherapeutic theory. The theoretical mechanics of how sandplay, an effective non-verbal therapy, works to heal and transform the psyche are articulated and applied to a complete sandplay case. This updated edition includes a clarification of the function of Jung's personality theory in the sandplay therapy method and an examination of the process of growth and development undergone in sandplay therapy. The material provides the clinician and student the theoretical foundation necessary to develop the clinical tools for the practice of sandplay therapy.