We parked at the bottom of a dune, hiked to the top and had a view of sand for miles..
The kids tried 'sledding' on plastic trays.. It didn't work so well, they just seemed to be plowing in the sand..
If you were actually sliding down the slope, you could feel a vibration and hear a hum.. this was the 'singing' we suppose..
Somehow Madeline lost one flip flop in the sand. It got buried as she was climbing up and in spite of getting all of her friends to help her look, we never recovered it.
We built a fire and when the sun went down, we cooked a meal and watched the embers burn.