The Argentine North Fork was built over 2 or 3 summers starting in 2009. It was always been a great hiking trail. As a mountain bike trail, it has always been good, but some of the switchbacks were pretty tight. We have been steadly working to improve that. Late last Fall and this Spring, our trail crew put a lot of work into widening several of those turns.
This morning I spoke with a regular A-Basin mountain biker who was climbing ANF for the first time since September. She described the work on the switchbacks as a "Game Changer." She is a very good rider, but said, in the past, some of the turns were pretty tight. She raved about the improvements, saying she easily rode to BML without struggling or stopping on any of the turns.