I rode through a rain storm, on a cantankerous camel....all these silly tourists behind me, not listening to me with regards as to how one should drape their legs over the camel's neck...we rode 6 kilometers.
As soon as we arrived at our camp I ditched my gear, changed into dry clothing, and started to hike up almost 100 meters on the biggest erg I had ever seen.
This photo does not do justice to the steep incline nor space that this dune occupies.