[SIZE="<FONT _gt_drjx1h8k8edi="1"><FONT c="656" _gt_drjx1h8k8edi="1" closure_uid_896564520="927">3</FONT></FONT>"][/SIZE]Hi Liam
I also need biometric visa for Senegal , next week I will travel to Madrid (I live in Asturias Northern Spain ) for visas harder to get in the way , in my case . Senegal , Nigeria , Angola and DR Congo .
The border crossing between Mauritania and Senegal is a bit hard, you have two options, the first Diama is a path of about 80 km of mud and sometimes partially flooded , especially now that the rainy season in the west, the second Rosso , sounds pretty bad , want to take your money in any situation ( bribery , fines , documents, even invent new fees ) and try to lose your patience , they will always respond with a " C'est l' Afrique patron" .
In my opinion Diama is more quiet, but in this border , I read the blog of a traveler on a motorcycle, he spent over there in August , 2013 , does not have sufficient infrastructure to read the new biometric visa , had to turn back to Rosso and once there took 6 hours to pass to Senegal .

There is another possibility . - Nouakchott to Kiffa and Kiffa to Kayes ( Mali ) and from there to Bamako .
Anyway, I hope to start my route in four weeks , would be nice to share some stage teaming .
I was traveling in Morocco and Western Sahara sometimes

Cheers
Esteban