Where you been?

Sometimes it pays to do a little homework... A couple of days ago I discovered that our Garmin Nuvi 770 had been quietly recording our progress every time it was turned on. Unfortunately, it wasn't turned on very much in the early days of our trip, because I couldn't get the cigarette lighter I'd fitted to work reliably, and we had to save power. That's not a big problem, because Garmin's maps in Mapsource are good enough in Europe and Morrocco to create route maps for Google Earth.
When John of the Desert Prats solved our power problem in Mauritania, we were able to power up the Garmin full time, and use it for a handy idea of how far we'd gone each day. But it was also tracking our progress, so we've got extremely accurate routes for a part of the world where the electronic maps are frankly rubbish.
Now I've married up the Mapsource routes and Nuvi tracks into one huge map of where we've been - well, roughly. It includes key locations like our desert and beach camps in Mauritania, the bush camp in Mali, and the boat hotel in Segou. Sadly, it doesn't have a track for the Tiz-n-Test pass in Morrocco.
You can download the KMZ file for Google Earth by clicking on the picture above, but be warned: it's a big file that takes Google Earth about 10 minutes to process before you can browse it, so download it to your hard disc first, and don't worry if your computer doesn't do anything for a long time. I might do smaller chunks if I have time later.
The green lines are our GPS tracks, accurate to a few metres, while the purple tracks are my Mapsource estimates, accurate to anything from a few metres to a kilometre or more.