The Sande Society is a fellowship of women found in West African cultures, which aims at preparing girls for adulthood. 
Mother Earth, life & soil. The representation of the earth is depicted as a female antelope with a baby carried on it's back. This could represent fertility and growth in the soil for a good harvest.
Be sure to read my post about chi wara, titled Art & Art History - Representing the Spirit of Chi Wara on the home page.