Officials need help finding Alexander Joseph Sevier, who was last seen at the housekeeping campground in Yosemite National Park on May 3.
Yosemite National Park officials said Sevier, 24, could have possibly taken a hike outside of Yosemite Valley. He arrived May 1 and told rangers he planned to go on day hikes by himself while at Yosemite.
He is described as 5-6, 128 with black hair and brown eyes. The man could possibly be wearing Holister, Aeropostale or Abercromie clothing.
Those who might have been on trails originating from Yosemite Valley who may have seen Sevier should call 888-653-0009. Other phone lines to call are (209)372-0608 or (209)372-0252.
On the search are Yosemite park rangers; the YODOGS of trained search dogs; and a CHP helicopter crew from Fresno. Search efforts are focused on Upper Yosemite Mist Trail and the Mist Trail. Searching will be done during the day, park official said.