Scientists do not use the name grizzly bear but call it the North American brown bear See brown bear for a discussion of brown bears outside of North America (in Asia, Africa, and Europe).he grizzly bear (Ursus arctos ssp.) is any North American subspecies of brown bear, including the mainland grizzly (Ursus arctos horribilis), Kodiak bear (U. a. middendorffi), peninsular grizzly (U. a. gyas), and the recently extinct California grizzly (U. a. californicus â ) and Mexican grizzly bear (U. a. nelsoni â ).
gorge noun (VALLEY) âº [ C ] a deep, narrow valley with steep sides, usually formed by a river or stream cutting through hard rock.
Gorges are deep valleys between cliffs that are formed by erosion, and were formed from the plateau that can be found to the eastern side of the mountain. The cliffs form because harder rock strata that are resistant to erosion/weathering remain exposed on the valley walls.