YOSEMITE NATIONAL PARK, Calif. (AP) â The body of a longtime Northern California university professor was found last week in Yosemite National Park, and park officials are asking anyone who may have seen him at the park to call investigators. The statement did not disclose details on how Youngblom died. Yosemite Park officials and the Tuolumne County Sheriffâs Office did not immediately return email and phone messages seeking more information. Anyone who may have seen Youngblom in the area of White Wolf, Pate Valley, or the Grand Canyon of The Tuolumne between June 22 and June 25 should contact the National Park Service Investigative Services Branch, the statement said.