Disappearances in National Parks around the world?

Today we will be going over the people's disappearances in National Parks around the world. There is a darker side to this unspoiled and stunning wilderness: the fact that since the National Park Service was set up in 1916, over 1,000 Americans have vanished without a trace on its grounds. Hundreds of people go missing at national parks across the United States every year. Some of these disappearances are never solved.