November 20: Oak Grove, MO to Greeley, CO . . .
Day two of my drive to Colorado into uncharted territory.
Read MoreNear mile marker 71, I realized that the rolling hills that had been with me for the last few hundred miles had gradually begun to disappear. This is because I had transitioned from the Smoky Hills region to the High Plains. Part of the broader Great Plains, the High Plains is a reference to the region's elevation.