BLACK HILLS, South Dakota (Storyful, KFOR) – Custer State Park posted a video to Facebook showing a giant herd of elk running gracefully across a prairie ... the largest free-ranging elk herds ...

HIGHMORE, S.D. -- Bruce Roseland runs cattle here in the heart of the South Dakota grasslands, in the same place where his great-grandfather ranched more than a hundred years ago. But today, when ...