This video is rather long and some of it is off-topic, but fast forward to minute 4:30 to see about five minutes of footage of a Nigerian horsemen in amazing costumes and tack. The notes for the video (on the lovely Internet Archive) indicate this is a parade of people going to a mosque (for a festival or holy day perhaps?), and the horsemen are escorting a particularly important guy. The horses and riders are just astonishing. The horses are typical of the region, being related to the Barb.