Search for overdue hiker under way in Wind River Range

John Diepholz is 64 years old, 6 feet, 3 inches tall, weighs 170 pounds and has short gray and brown hair. He may be sporting a gray beard and could have a bright yellow tent, red or blue backpack with him. He has been missing in the Wind River Mountain Range for one week, having entered via the Elkhart Trailhead. He may be in the vicinity of Wall Lake or Island Lake.