Info is requested from anyone who was in the Hetch Hetchy area on the 17th-18th-19th-20th, with particularly emphasis on the backpackers/hikers parking area and along the trail from Hetchy-Vernon-Jack Main-Eleanor drainage. Authorities request that you call/text the number below, whether you saw Alan or not, but were in the area on the dates listed above.
There is information, which points to Alan being on the trail, heading in to do the Vernon Lake Loop and possibly Laurel Lake on the way.

Any info you may have, please call/text the ISB Tip Line at 888-653-0009.