The Bangui Magnetic Anomaly, one of the earth's largest crustal anomalies and the largest in Africa, has its centre in Bangui." It takes the form of a huge ellipse of x , with its central point at 6 degrees north and 18 degrees east. It consists of three parts or segments, which comprise the northern, the southern and the central anomalies. The magnetic equator passes through the feature's centre. Although it is well documented, the feature's origins are not fully understood.