Les Collons is in Switzterland in the Swiss Alps. The nearest town is Sion, which is down the mountain.
Map (Les Collons is shown by the red marker):See this map on Google Maps
The nearest airports are Milan, Geneva and Sion.
From Milan (Bergamo) and Geneva airports there are trains to Sion station.
From Sion there is a regular bus service up the mountain, stopping at Les Collons, or you can take a taxi.