With over 52 million acres, the US National Park system is home to some of the most breathtaking natural features on the planet. Ten's of millions enjoy these parks every year.  Join us this week for an installment of, “National Park Cold Cases” as we explore Yosemite National Park.  Cases covered in this episode: David Paul Morrison, Walther Reinhard, & George Penca.

On July 25th, 1981, 14 year old Stacy Arras along with 8 others went horseback riding in Yosemite National Park. After a long day of riding the group stopped at the Sunrise High Sierra Camp for the night. Stacy told her father she was going on a short hike to take pictures.

In episode 4, we discuss the disappearance of Michael Allen Ficery, who went missing in Yosemite National Park on June 15th, 2005 while backcountry hiking a loop near the the Pacific Crest Trail. A massive SAR operation was conducted after Michael was reported missing which only turned up his backpack.