The sand at White Sands National Monument is made of gypsum, giving it an unusually light color. Gypsum crystals don't retain solar energy like typical silica sand does, so it often stays relatively cool, even on hot summer days. On winter days, though, the sun does very little to warm the sand. Add a little moisture from recent precipitation, and it gets super frigid!
To avoid filling my shoes with sand during this winter adventure, I opted to go barefoot. I didn't want to miss the rapidly approaching sunset, so I rushed out onto the dunes, hoping that my feet would get used to the numbingly cold sand; they never did. This was one of the more physically painful photos that I've taken in a while, but the sunset was worth it.
White Sands National Monument - New Mexico