I was hiking a five-day loop - alone - in the Rocky...

I was hiking a five-day loop - alone - in the Rocky Mountains when I rounded the switchback and saw a large body on the trail ahead. It had brown fur with a cinnamon tinge that was draped across dense, humped back muscle. A broad head lifted and I could see the dish-shaped muzzle was catching my scent. I knew bears. This was a grizzly.