The Alessandro Nacamuli, or Col Collon refuge was built at the start of the nineties.
There are numerous opportunities for trips and crossings in the area, ranging from two-day trips to long distance alpine skiing lasting from three to six days or more, with cross country routes or crossing routes, which are all magnificent both from the point of view of the skiing and the landscapes.
Even in summer there are numerous activities possible in the surrounding areas: from simple excursions along the paths of the high routes lasting several days, to mountain climbing routes.
The "Tour du Cervin" or "Giro del Cervino", goes past the refuge (a tour of 7-8 days which makes it possible to admire every side of one of the most representative mountains of the Alps), as well as the "Tour des Grands Barrages".

Aosta Est motorway exit. Follow the signs for theTraforo del Gran San Bernardo (Gran San Bernardo Tunnel)(green signs) which after a short distance take you to the mouth of the tunnel which links with strada statale (main road) 27. Straight after the tunnel exit go right at the junction following signs for Valpelline, Diga di Place Moulin (Place Moulin Dam).
Carry on along the regional road for a few Km until you reach the town of Valpelline.
Go past the petrol station on the right (the last service station in the valley) carry on uphill until you reach the junction for Bionaz on the right, level with the hairpin bend. Having gone over the junction carry on along regional road 28 which first of all goes through the town of Oyace and, after a short distance uphill, you will reach the upland plain of Lexert with a lake of the same name.
Carry on, just before you reach the centre, on the left, you will come across the junction for Place Moulin and the dam of the same name. Carry on along the road which goes uphill until you reach the large parking area close to the dam where you can leave the car, then travel for three and a half hours on foot.

The nearest train station is in Aosta. The bus station is in front of the train station.
Scheduled Coach service as far as Bionaz (approximately 4 trips a day, excluding Sundays).