That is one bizarre looking surface formation.
It looks more liquid than solid, the way that water's surface tension causes it to "fold" when a high-velocity, laminar wind blows across a large pool of water toward a gently-sloping shoreline.
According to the article's footnote, the winds are coming from the "north" (relative to the picture's orientation; the top of the picture may not actually be "true north"). But by the way the dunes are constructed, I would expect that the winds were coming in from the relative "east" (right side of the photo). If you take a close look at snow drifts here on good ol' Earth, the windward side of a snow drift is often banked more steeply than the leeward side. The Odyssey photo in the article shows dunes that are more steeply banked on the right than the left.
Any geoscience folks out there who could enlighten us?