A couple of weeks ago I was in White Sands National Monument, when a rather rare event occurred for that area of New Mexico. It had rained for two days, so there was a lot of moisture in the sand. But the first morning the weather cleared the photography conditions were magical for a few hours. The overnight temperature had been in the low 20s and frost had formed on everything, while during the early hours a thick fog layer formed, low to the ground. Wow! Frost and fog together, a combination that lasted for only a few hours.