There are several access routes to Refugio Frey. The route described here is considered the standard winter access for ski touers. There is an alternate low route from the ski area that wraps around the base of a mountain (his route is apparently long and harsh in the winter). There is another route that is more popular wiht snowboarders, but I haven't done it.
View from the top of Princessa 3 Charilift. Access to Frey is thourgh a notch in the col in the middle of the photo.
From the col above Princessa 3 the route descents the long steep slopes to the valley bottom.
This is a close up of the previous image that shows more detail for the descent from the col above the Princess 3 lift. Note the large avalanche crown! This is the standard winter access route!
From the the bottom of the large slopes, the access route descends along the gentle valley bottom and then climbs up into a hangin valley where Refugio Frey is located.