Before the 1884–85 Geological Survey of the park, the Lamar was known as the East Fork of the Yellowstone River. During that survey, Geologist Arnold Hague named the river for L.Q.C. (Lucius Quinctius Cincinnatus) Lamar, who was then the Secretary of the Interior (March 1885 – January 1888). 

The Lamar River is one of the most popular fishing spots in Yellowstone Park. The access is easy, and the cutthroat fishing is some of the best in the world.

Some of the wildlife you might see while strolling by the river include pronghorn, bison, and bear within the area of the Lamar River Valley. It's most famous, though, for being one of the most reliable places in the world to see wolves. There are two famous wolf packs in the area; The Lamar Canyon and Junction Butte wolf packs.

And if you are a hiking enthusiast like I am, this is a great hiking spot too. The Lamar River Trail is a seven-mile-long round-trip hiking trail. The trail's hiking difficulty is fairly easy, and the trip can be completed in one full day. If you prefer to camp overnight, there are two great campsites, 3L1 and 3L2, along the trail within the area near Cache Creek. If you are here in the Spring, though, 3L2 might be inaccessible due to the high river.

Maybe I'll see you out on the hiking trail! =]:)