Internationally Certified Guide, Guide for 24 years. Mark is one of the most competent Mountain Guides in North America and he has been highly involved in the certification process for new guides through the American Mountain Guides Association. He has climbed and guided virtually in every Mountain Range in the world, with ascents of the South Face of Aconcagua, Cassin Ridge on Denali, Cerro Torre in Patagonia, North Face of Eiger, Bonatti Pillar of Petit Dru, extensive climbs in the Alps, Ama Dablam, North face of Mount Robson, Alpamayo, Khan Tengri, West Pillar of Makalu, Southern Patagonia Icefield traverse, extensive climbing in Peru, Bolivia, Ecuador, Chile and Argentina. Speaks English, French and Spanish.