On our way back to Beatty after visiting Marble Canyon we stopped at the Stovepipe Sand Dunes. It was one of those 30 minutes of magic that happen around sun set sometimes.
Just after the sun disappeared off the distant clouds this cold wind rose up from the valley below, blowing sand and moisture. We didn't hang around out in the dunes to see how much sand could be moved in a short time. By the time we had driven through the sand storm and up to the 3500' pass leading to Beatty we were hit by a hail storm with lightning. A change from 70 degrees to 37 degrees. Such extremes in Death Valley.