This paper outlines management guidelines for outdoor adventure pursuits based on analysis of accident case studies in the literature. Managing risk, to a large degree, involves managing human errors related to natural environmental hazards. The knowledge needed to manage risk may be gained through personal experience (the most dangerous way), education, or the experience of others. Each case study illustrates a human factor that can increase risk and discusses related safety procedures that could minimize the risk. These human factors include: (1) poor judgment due to lack of experience; (2) leader's lack of technical skills, people skills, or environmental knowledge; (3) engaging in unsafe activities because of "tradition"; (4) interpersonal factors that lead to the group splitting up; (5) peer pressure; (6) personal or group goal orientation; (7) the belief that large group size alone can produce safety; (8) pushing the limits of one's skill in critical environmental conditions; and (9) the limited human perspective on natural recurring hazards. The role of guidelines is to establish a barrier between environmental hazards and potential human factors. An appendix outlines guidelines related to leadership, group formation, goals and decision making, and group movement. (SV)