Adventure therapy is action based. Young people are encouraged to participate directly in activities. This process of learning by doing should facilitate personal development which will enable them to take more responsibility in shaping their life constructively. In particular for patients with psychosomatic illnesses and in the rehabilitation of people with psychological illnesses, there have been significant positive results with respect to Angst, self realization (???), depression and feelings of quality of life. Designed to examine effects before and after an activity, this pilot study will look at the effects which therapeutic climbing has on psychiatric patients. The questions being examined are how does therapeutic climbing effect patients’ depressive symptoms, their anxieties (Angst), their relationship to personnel, and their current mental state? The authors have developed the Tuebingen Scale of Mental Well-Being which includes, among other aspects, Angst, mood, joy, physical well-being, alertness, sense of freedom, trust and self-assurance. This scale is used before and after an activity to measure these aspects. The subgroup analysis of the pilot study shows a positive trend with respect to the feelings of success, trust, and joy for patients with depression and personality disorders.