Sussusvlei is maybe the best known photographic location in Namibia. It is an amazing place to be, absolutely unique and beautiful. You drive 60km into the park, left and right of you there are the biggest sand dunes in the world. If you have good weather (and that is very likely to be in the desert) you can take dozens of great pictures. The park is open from sunrise till sunset, so I recommend to sleep in the park. If you sleep on the campground or the only lodge in the park, then you can drive befor sunrise into the valley to catch the magic morning light.