A mountain guide is a specially trained and experienced professional mountaineer who is certified by local authorities or mountain guide associations. They are considered to be high-level experts in mountaineering, and are hired to instruct or lead individuals or small groups who require this advanced expertise. This professional class of guides arose in the middle of the 19th century when alpine climbing became recognized as a sport. A mountain guide's skills include: Rock climbing Ice climbing Mountaineering Skiing Supporting these are the theory and practice of: Snowcraft Weather appreciation and interpretation Navigation Risk assessment Avalanche hazards First aid The title of IFMGA Mountain Guide is (in most countries) reserved for individuals who have received full certification through their country's national mountain guides association of which the curriculum and training are approved by the International Federation of Mountain Guides Associations (IFMGA). Certification is earned through a rigorous examination process encompassing rock climbing, alpine climbing and ski mountaineering. Typically lasting between 3 and 7 years, mountain guide certification requires a high level of commitment, dedication and technical skill to achieve. In addition to assuring safety, professional mountain guides frequently offer other desirable services to their clients. These services can significantly improve the alpine experience, especially when the client climber has limited time or equipment, lacks a qualified partner or is visiting an unfamiliar area. These additional mountain guide services may include: Precise local knowledge of mountain routes, weather, snow & glacier conditions; Specific training in alpine skills like off-piste skiing, avalanche awareness, rock climbing, ice climbing, mountain navigation & the proper use of mountain tools like ice ax, crampons, rope, climbing anchor systems, avalanche beacons, etc.