Greater Yellowstone is renowned for its wildlife in part because the diversity of animal populations still present here have vanished from most other areas of the Lower 48 states. A question for outdoor-minded members of Generations Z through X is this%3A how can ancient wildlife migrations%2C like those for elk pictured in this map%2C persist with unprecedented expansion of the human development footprint happening along with rapidly rising levels of outdoor recreation in the public land backcountry%3F