Yeah this is definitely a sight to see for anyone in town.
There are literally HUNDREDS of people who come jam every sunday until sun set.
Usually you have the main circle where all types of different percussion instruments jam together (i.e. Djembe, Darbouka, Tamborine, Guiro, etc.). Typical drum circle stuff.
http://www.youtube.com/watch?v=MScUGu_bYZ4However, the more
traditional African Rhythm percussionists usually branch out into another circle. Check out this video of the Bangoura brothers jamming it out. These guys have alot of talent.
http://www.youtube.com/watch?v=VmHFHB-ttqw