Archaeologists believe the Wassu stone circles are burial sites constructed about 1200 years ago. Each stone weighs several tonnes and is between 1m (3.3ft) and 2.5m (7.5ft) in height. There's a small but well-presented museum with exhibits discussing the possible origins of the circles. Stonehenge this isn't, but nevertheless, it's fascinating evidence of ancient African cultures.

Most of the stone circles in the region date from AD 500 to AD 1000, before the Mandinka people migrated to this area. Excavations have unearthed human bones and artefacts at the centre of many circles, indicating that they were burial sites, although dating techniques show that bodies may have been buried some time after the circles were constructed. Despite archaeological excavation, little is known about the people who built these structures.