GUINEAN BAGA NIMBA D'MBA MASK. Baga Nimba mask from Guinea, West Africa. These masks, also known as D'mba, are large wooden shoulder masks representing a female figure and are significant in Baga culture. The mask is carved from wood and features detailed carvings on the head and body. These masks are often used in harvest ceremonies and other important events, symbolizing fertility and abundance. They are worn on the shoulders of a dancer, with the dancer's body hidden beneath a raffia costume.