National Parks Traveler: Isle Royale's Wolves And Caving In The National Parks

Dr. Rolf Peterson, a long-time wolf biologist at Michigan Tech University, discusses Isle Royale National Park's wolf recovery program in this week's episode, while host Kurt Repanshek reviews a book on butterflies you might encounter in national parks and another on marine life photography, and ends the program with a look at the many national parks with caves you can explore.