The existence of such powerful roaring winds kicking up violent and powerful dust storms suggests that the underlying sand can be set in motion, too, and that the giant dunes covering Titan's equatorial regions are still active and continually changing.
The full moon night could be the night lovers would give their all to meet. We find in a wide collection of books how young lovers wait with longing for the full moon night. It is as if the night is tailor-made for their passions to flow unrestrained, spontaneous. The author need not delve more into descriptions of any nature to create the perfect ambience if he mentions that it is a full-moon night. The reader knows by instinct and his study of related literature and art to tell what is about to follow.
As time passed, the region would have cooled down considerably and contracted--thus pulling away from its surroundings and forming fractures akin to the cracks that form in mud as it becomes dry--but on a considerably larger scale.