You'll see all sorts of things in Yellowstone that will blow your mind. Bison fights, bear sightings, and not to mention all the natural beauty to get lost in. Then there are the things that hit you on a spiritual level. On my last drive out of the park, soaking in the magnificent surroundings I had just been immersed in for three days, a lone elk walked atop a ridge with the setting sun, creating a perfect silhouette. Close-ups are great, but it's moments like these that stick with you forever.