I retained Mark to guide my 12-year-old son and I on the Tour du Mt Blanc in late May/early June 2010. We were pre-season, meaning that we met with some adverse weather, but Mark was consistently excellent in problem-solving, navigation and finding lateral solutions to difficult situations. He is a personable, highly experienced mountain guide with a superb knowledge of the Savoie region especially. I would certainly retain Mark again for any similar undertakings. June 28, 2010