Elk
(Cervus canadensis roosevelti)

I derect that in future that the party mix the pounded fish with fresh water-

my hunters killed three Hawks, which we found fat and delicious, they Saw 3 Elk
William Clark

Learn more about Roosevelt Elk at Wikipedia.

Large elk eating in a field

Photo taken on December 21, 2010 at the Jewell Meadows Wildlife Area.

Beard's Hollow

they...informed me that the wood was so thick and obstructed by marrasses & lakes that they were unable to proceed to the ocean which could not be at any considerable distance from the apparent sound of the waves breaking on the Coast.
Meriwether Lewis

Beard's Hollow describes what the hunters saw. However, they were several miles to the south of it.
Photo date: December 18, 2010

Thick, lichen-covered branches reflecting in a marshy pond

Youngs River

the country to the S. E. appears to be low for a great distance and is marshey and untimbered for three miles back...
-Meriwether Lewis-

Photo date: December 20, 2010
Some modern artifacts have been obscured.

Large tidal river and large tidal meadows in front of forested hills

Clatsop Range

The hills on this Coast rise high and are thickly covered with lofty pine maney of which are 10 & 12 feet through and more than 200 feet high. hills have a Steep assent.
William Clark

Photo date: December 20, 2010
Some modern artifacts have been obscured.

Sun break on low forested hills on a stormy day

Pacific Rhododendron
(Rhododendron macrophyllum)

I walked on the point and observed rose bushes different Species of pine, a Spcies of ash, alder, a Species of wild Crab Loral and Several Species of under groth Common to this lower part of the Columbia river—
William Clark

Learn more: Wikipedia | Wikimedia Commons

Low bush with a large, purple and white bloom

Photo ©2008 Walter Sigmund. Permission via the GNU Free Documentation License.