Picture having the endurance and courage to travel the world's deserts on a motorcycle. Then throw in interesting tidbits, such as crossing the China-Pakistan border on Sept. 11, 2001. Add in professional-quality filming, and a sampling of local customs and traditions, and you have a very good DVD set, especially for the price.
In other words, this is a very good set, but it didn't quite hit the top.
No, the couple are not professional geologists, biologists, sociologists or cultural anthropologists. So, you won't get in-depth explanations of geological formations, flora and fauna or Buddhist rituals or other things. This is a travelogue as much as anything.
But, it's a good one, again especially for the price.
Other than the caveats above, I have a couple of others.
First, on their North American deserts section, they have a few minor anthropoligical and geographic errors in the part taking about the Navajos. (I grew up out there, that's how I know.)
Second, it looks like this was originally produced for German TV or something. Each segment, about a separate desert, has its own brief opening and credit-lines conclusion. Plus, most segments start the segment itself with a brief transition from the previous segment.
All this is unnecessary for a stand-alone DVD set vs. a TV show and should have been edited out. Between that and a bit of of other judicious editing, this could have either been knocked down to 5 hours, or else run at 6 hours with more depth.