We came here as part of a (very good) Jeep tour organized by Mui Ne Backpackers.
It is OK if you are passing but if you only have time for one dune, the white sand dunes are much better.
Based on other reviews and what I have experienced in Vietnam there was actually surprisingly little rubbish around. Beware of the touts who will attack you the moment you get out of the car.
The highlight for me was seeing a few bus loads of Japanese tourists set up tripods etc to take photos of actors dressed up in Vietnamese dress walk the ridge line (see photo), it was like the international press gallery was visiting Mui Ne!
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