To get to the kelso dunes you drive through Mojave a bit then have to drive on a well maintained dirt road all the way to the dunes. I know it looks cool and fun in the pictures, but the hike to the dunes is no joke. Would not recommend going during the summer. It probably takes 20-30 minutes to get to the skirts of the dune. And is probably a 2 hour hike to the top of it. This hike is no joke. The dunes are very steep and is extremely tiring just to make 10 yards of progress. The reward and views at the end are absolutely worth it though. Jumping or rolling down a huge sand dune is a part of the reward on the way back.