yellowstonenps 16053071838 The first wolf arrives in Yellowstone at the Crystal Bench Pen (Mike Phillips-YNP Wolf Project Leader, Jim Evanoff-YNP, Molly Beattie- USFWS Directo

---

Size: 1909px × 1309px
Photo credit: © Nature and Science / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: nature, nps, science