A professional who organizes and conducts mountain-climbing expeditions for adventurers or tourists. Respnsibilities include:

• Arranges for camping and climbing equipment, transportation to site of ascent, and services of medical or other personnel as needed.
• Selects ascent consistent with experience and endurance of members of climbing party.
• Leads party to site of ascent and during climb.
• Gives advice and instruction to climbing novices in accepted techniques and use of equipment.
• May obtain permits to climb in restricted areas and verify quantity and quality of client-furnished equipment to ensure fulfillment of prerequisites prior to departure.
• May give classroom instructions in mountaineering and wilderness survival.