For the past 240 weeks, the National Parks Traveler has brought you weekly podcasts examining life, news, and exploration of the National Park System. It’s been a long-running series that has never lacked for topics.   We hope you’ve found those episodes as informative and interesting as we have.    For this week’s show, we’re diving into shows from past years to bring you two we think you’ll find fascinating. One revolves around the question of whether a gun can keep you safe from bears in the backcountry of parks. We discuss that topic with Tom Smith, a professor of wildlife sciences at Brigham Young University and a member of the National Rifle Association.   In the second part, we look back at Lynn Riddick’s journey underground at Mammoth Cave National Park.