The Dogon people of Mali are renowned for their masks. The Dogon are an ethnic group that live in the central plateau region of Mali in West Africa. They have a rich cultural heritage that includes a deep understanding of astronomy, art, and ritual practices. Dogon masks are used in various religious and cultural ceremonies, such as funeral rites, initiation rites, and agricultural festivals. The masks are often carved from wood and decorated with various materials such as cowrie shells, beads, and metal pieces. Each mask has a specific meaning and is imbued with spiritual power. Some masks are used to represent ancestors or spirits, while others are used to evoke specific emotions or to protect against evil. The Dogon masks are considered some of the most beautiful and intricate masks in Africa, and they are highly sought after by art collectors and museums around the world. Therefore, the correct answer is the option "masks".