Start of an 8 day TMB highlights walk. Starting at Les Houches climbing up to the Col de Voza 1653m. The weather was very poor so I decided to take the lower route to Bionassay rather than the Col de Tricot. This also meant that today was a good "warm up" day for the following weeks exertions. From Bionassay we dropped into the valley at Tresse and carried on the GR TMB to Les Contamines.