David Paul Morrison, 28, was last seen May 25, 1998, in Yosemite National Park. He had been with friends in Little Yosemite Valley for Memorial Day weekend and left alone that morning to hike to Half Dome but never returned. An experienced hiker, he was not equipped for an overnight stay and a sudden storm struck that day.

He was wearing a gray long-sleeved University of California Santa Cruz sweatshirt, black sweatpants, Nike Air sneakers, and carrying a black, green, and yellow Osprey fanny pack with his credit card. Extensive searches found no trace; he is classified as lost/injured missing.

Did anyone hike Half Dome that day or see someone matching his description?