http://www.nps.gov/yose/planyourvisit/wildpermits.htm our trailheads are 22 and 23 22A. Glen Aulin(Camp 1st night at Glen Aulin) 22B. Glen Aulin Pass Thru toCold Canyon or Waterwheel Falls 22C. Young Lakes via Glen Aulin 23. Young Lakes via Dog Lake reservations http://www.nps.gov/yose/planyourvisit/wpres.htm Three Ways to Make a Reservation In 2011-2012, the reservation office is open November 28 through September and accepts reservations for trips during May through September. Reservations are not necessary for trips during November through April. We are not currently accepting online reservations. Fax (preferred): Please complete this reservation form [300 kb PDF] on your computer, then print and fax it to 209/372-0739. (You can fax 24 hours/day, seven days/week.) Faxes and letters will be processed before phone calls. To be considered for this priority, faxes can be received anytime between 5 pm and 7:30 am PT. Faxes and letters received by 7:30 am will then be processed randomly. Faxes recieved during business hours will be processed on first-come, first-served basis along with phone calls. If you provide an email address, you will receive a generic confirmation within one business day stating whether you received your first, second, or third choice. Otherwise, allow two weeks to receive a printed confirmation by mail. If you would like to request a reservation for a departure date within the next two weeks, please apply by phone. Phone: Please have your trip planned and the above information ready before calling 209/372-0740. The phone is staffed Monday through Friday, 8:30 am to 4:30 pm.