This study investigated social development and demonstration in preadolescent girls within the context of an outdoor adventure-based program. Researchers implemented an 11-week outdoor adventure-based program for seven girls aged 10 to 12. A case study design including pre- and postsurveys, weekly small-group discussion responses, comment box submissions, and researcher observations was used to obtain data on the participants' social approaches and the factors influencing social dynamics within the group. Major themes identified within the group included cohesion, the facilitator's role, participant's perception of role, recognition of growth, independence, and task orientation and group organization. The results and limitations of this study support the need for further exploration of an outdoor adventure-based program for preadolescent girls.