D is for Desert.
In this case, the desert along Interstate 40 as I drove through the southern edge of California's Mojave National Preserve.

Although hot temperatures aren't one of my favorite things about the desert, I'm always in awe of how even the scarce vegetation stays green in the arid climate.

Abandoned shelters, including small houses, ranches and occasional restaurants, always spark my imagination and have me wondering the circumstances behind their abandonment.
My favorite thing about the desert though, is its simple vastness. The beauty of seeing nothing but sand and scrub for miles in all directions has a way of making one feel small.