The sugar bowl is located in twentynine palms, California approximately two miles off of Hwy 62.
If you are coming from Interstate 10 take the Hwy 62 Exit towards Yucca Valley and Twentynine Palms. After driving through Joshua Tree you will see Copper Mountain College on your left. Approximately 4 to 5 miles after Copper Mountain College you will see it on the left. It is a huge Sand Dune with trails running all over the place. There is no exact way to the dunes, but you can take Lear Avenue on the left towards the Marine Corps Base, and stage off of one of the dirt roads on the right.