Ken Clark, of Gilbert, was reported missing Sunday and thought to be hiking in the mountains.
Deputies stopped searching late Tuesday morning because of the heat, but began again Tuesday evening. They plan on searching all night, a spokesperson said.
Deputies found his car near the First Water Trailhead. The man is in his late 50s and is an avid hiker with no medical history, Hegstrom said. Clark has long blond hair and weighs approximately 200 pounds.
Deputies said Clark was believed to have had water with him.
Search dogs and deputies and volunteers on horseback were also being utilized.
His family told us he knows the Superstition Mountains well, and loves the outdoors and being around people. He has a wife, three kids and 10 grandchildren.
"For a hiker that's been stuck out there, it'd be pretty harsh," said Lindsay Pate, a skilled horseback rider and trainer.
She arrived with a partner to join in the search effort. Although her search didn't lead her to Clark, she's holding out hope.
