Spilling Thought: Upper Missouri Breaks National Monument in #Montana remains largely unchanged in the nearly 200 years since Meriwether Lewis and William Clark traveled through this area on their epic journey. What’s more, the first skeletal remains of dinosaurs ever discovered in North America were found right here. The monument offers natural beauty in a remote setting and plenty of opportunities to explore by #hiking, fishing, or floating along the National Wild and Scenic River portion of the Missouri River. Photo by Bob Wick, @mypubliclands. by usinterior