:30am Northstar's award-winning corduroy and legendary tree skiing is some of the best in North America.Every Saturday through the end of the ski/snowboard season you can get first dibs on them when you sign up for First Tracks at Northstar (weather & conditions permitting). Recommended for Advanced (levels 6+) skiers and riders, ages 13+ Sign up in advance at Tickets & Season Pass Office in the Village at Northstar or call 530.562.2267 or 1.800.GO.NORTH.