Dogon is not a dangerous place....but you do have to watch out for a few things like the millipede below. Medical care in Dogon Country is sparce at best and most options involve hiring a car at the last minute to get you to Bankass or Bandiagara...and in Africa a tourist in a rush = $$$$$$ to the locals.
Fondest memory: Not getting stung by anything...just kidding...but not by much
Favorite thing: In the dry season it can get warm out here. While it stayed in the 90-100F degree range while I was here and was not bothered by it I did manage to dehyrate myself one day. The dry air and occasional breeze caught me off guard. If you stay on the trails you are usually never more than a few miles from the next village so you can buy it as you go....just remember to drink the stuff. The locals may be used to it and not appear to be drinking much... they drink enough and may load up while you are not watching. I would stay away from the sodas until the end of the day as they may give you a bit of a sugar kick but can burn you out early if you drink them during lunch as still have further to go.
The "falaise du Badiagara" is a huge rocky wall. it stretches from Bankass over Bandiagara till Douentza, some hundert kilometers in legth. It is up to 200 meters high.
From time to time, the immense rocky wall is ruptured by a small canyon, where it is possible to walk up to the high plateau above or vice versa.
Fondest memory: The small villages of the Dogon people on the foot of the Bandiagara esacrpement seem to be "glued" on the rock. It is one of the most picturesque sceneries in Mali.