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b'Mark Redwine, 59, is on trial for the 2012 murder of his son Dylan Redwine, 13. Redwine was arrested in Washington in 2017 and charged with second-degree murder and child abuse, years after Dylan\\u2019s death. He has maintained his innocence but prosecutors say Redwine killed his son in a fit of rage. In 2012, volunteer search teams and authorities began scouring the area around Redwine\\u2019s Durango, Colorado, home for months, in hopes of finding Dylan. The search proved to be difficult since Durango is at an elevation of 6,512 feet with steep canyons and mountains. In June 2013,\\xa0searchers found\\xa0a few of Dylan\\u2019s bones, a part of his shirt, a sock, and his shoestring, in Vallecito, which is around five miles away from Durango. Searchers found his remains in an area difficult to get to, especially for a young boy or for someone who doesn\\u2019t know the area well. Defense attorneys argue that Dylan ran away from Redwine\\u2019s home and was likely killed by a mountain lion or bear. Forensic expert Joe Scott Morgan, professor at Jacksonville State University looks at the possibilities.'