Yosemite Search and Rescue (YOSAR) is the emergency response team for Yosemite National Park, where each year an average of 200 visitors are lost, injured or die in the rugged environment. Rescues have a long standing history in Yosemite, dating back to the park's establishment in 1890. Today the YOSAR response team is comprised of Park Rangers and SARsite members, who work closely with the Preventative Search and Rescue (PSAR) program to ensure visitor safety.
The SARsite was established in Camp-4 during the 1960s to respond to the increasing high-angle emergencies with a volunteer group of highly experienced climbers living in the park.
As a result of its beginnings and subsequent history, YOSAR is structurally different from other SAR teams. Yet, in most of its specialties – big wall rescue, emergency medicine, helicopter rescue, canine search – YOSAR ranks among the best teams in the world.