The Colorado Sandplay Therapy Association (CSTA) was founded in April 1995 to nurture and expand Dora Kalff’s vision of Sandplay Therapy and to support the Sandplay Therapists of America (STA). The practice of sandplay is grounded in Jungian psychology, Margaret Lowenfeld’s World Technique, and Tibetan Buddhist wisdom. CSTA’s mission is realized through educational programs and professional support.