It's almost crystal digging season in Oklahoma. Starting April 1, you can enjoy the 11,200-acre salt flats and collect the state crystal of Oklahoma free at the Salt Plains National Wildlife Refuge.

DILLON, Mont. — Molten granite formed the Pioneer Mountain Range in southwest Montana about 72-million years ago. As the granite cooled, water carried quartz and other minerals through the rocks and ...

The Sooner State boasts nine wildlife refuges, each offering a one-of-a-kind adventure in a different setting. For instance, when you're enjoying a serene escape in Medicine Park, considered America's ...