The participant puts activity or participants safety at risk; the participant does not follow actions for the good development of the activity; cloudiness between elevation comprising glacial areas; wind, rain or snow between elevation comprising glacial areas or that may affect the physical and/or psychological conditions of the participants; physical and/or psychological assessment of participants by the guide responsible for the activity; volcanic activity and/or other natural phenomena that endanger the safety of the trip; weather/nature conditions change; accidents or incidents.