A liitle white spray paint, and this could be a snow scene. I never had much luck finding access to the dunes there. I'm glad you know where to find these great spots. Great sand sssssnake.
Stunning! The ripple-changes are like what one sees on the seabed, but I've not seen that in the dunes before (I've been to the wrong dues, obviously). I love how the dunes almost fill the photo, but you left a bit of gorgeous misty blue in there. The leading lines in the sand pull my gaze up and towards the left, then the sky and clouds drag it over the right. Love it!
In the book/film, 'Dune,' the sand worms are hugh creatures living under the sand in the desert.