From Salman Hameed of Irtiqa:

Here is an interesting discovery of pre-Islamic rituals in northern Ghana from Science:

A team led by Benjamin Kankpeyeng of the University of Ghana in Legon excavated part of an earthen mound containing 92 whole and broken terracotta figurines of humans and mythical creatures. Radiocarbon dates from similar mounds in the region place the time between 600 C.E. and 1200 C.E.
The mound, which miraculously escaped decades of heavy looting in the region, may have served as an ancient shrine. Team co-director Timothy Insoll of the University of Manchester in the United Kingdom says the figurines have what appear to be libation holes to hold ritual drinks for a deity. There’s also a ritually arranged human skull: “The jaw was removed, the skull was turned face-down, and the teeth were snapped out and placed nearby,” Insoll says.

Very cool.