Alright I searched most of the where to ride topics but didn't see any posts about the Rock Springs Wyoming sand dunes.If your near the southern wyoming border you might want to give 'em a shot they have a huge ride are. I think about 11,500 acres but not possitive. The parking area has no shade or water though so bring all that youll need they are also 30 miles from town but there are atv parts houses and dealerships in Rock Springs. yamaha, honda, suzuki, polaris, , ktm if something brakes. Lots of locals ride but the big days are the holiday weekends. Try 'em and let me know what ya think.......

 

Look here for pics and vids of Rock springs and many other sand dunes.
http://www.dunereview.com/home.htm

 

Yup great site and they have forums like this one![img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-happy.gif[/img]