Day 4! This is the halfway mark of the trip! We left the area we deemed The Land Before Time and traveled into a protected area only accessible by way of tour operators.
We stopped at Yolyn Am Valley to find narrow gorges, yaks, and impressive views.
After hopping back into the van, we found ourselves driving through gorges that could barely accommodate the width of the van, (much like in the above picture) not to mention that we were driving through streams. Is this a road or a river??? Eventually we made our way out and drove a LONG time until we reached the famed Khongor Sand Dunes of the Gobi. This is what we've been waiting for!
And how were we greeted? With a sand storm.
It eventually cleared and we spent the remainder of the night checking out the area and ogling at the view. 
The night ended with a rainbow!
The next post includes camel riding & climbing the dunes. EPIC !