Dennis has professionally mountain guided since 1997 and has nearly 30 years of climbing experience. His passion for mountains and exploration has led him to climb and travel all over the world. In 1993 he worked as a volunteer in Nepal where he discovered his love of foreign cultures while helping the Nepalese people. He’s worked for many well-respected guide services including ice guiding in New Hampshire’s White Mountains, on Mount Rainier for RMI and in the North Cascades. His expedition experience includes Mount Everest in Nepal, Cho Oyu in Tibet, Ama Dablam in Nepal, Alpamayo in Peru, Denali in Alaska, Aconcagua in Argentina, Elbrus in Russia, Kilimanjaro in Africa as well as many peaks in Nepal and major mountain ranges of the United States.


  • Mount Everest (2 expeditions, to 27’000)
  • Cho Oyu
  • Ama Dablam
  • Denali (2 expeditions)
  • Aconcagua (4 expeditions)
  • Mount Elbrus (6 expeditions)
  • Mount Kilimanjaro (5 expeditions)
  • Alpamayo
  • Illiniza North, Cayambe, Antisana, Cotopaxi, Chimborazo
  • Orizaba, Iztaccihuatl, La Malinche, Nevado de Toluca
  • Island Peak (5 expeditions)
  • Lobuche Peak
  • Naya Kanga
  • Mount Blanc
  • Mont Blanc du Tacul
  • Mount Rainier 60+ (DC, Ingraham, Emmons, Kautz, Gib Ledges, Liberty Ridge)
  • Mount Baker 50+ (Easton Glacier, Coleman Deming)
  • Mount Shuksan
  • Eldorado Peak
  • Sahale Peak
  • Forbidden Peak
  • Mount Olympus
  • Mount Hood
  • Mount Adams
  • Mount Stuart


  • Wilderness First Responder / CPR
  • AIARE Avalanche 2
  • Leave No Trace Trainer