Stone carved in a oval shape

This is an artifact similar to several others which have been specifically found in northern Haiti, however their purpose is still unknown. It is a stone which was carved into an oval shape. Its inferior part has four legs and there is a sculpted figure on its front. The stone is a medium to fine grained igneous rock in grey color. We think it is from the Meillac culture and that it was made circa 11 and 13 century AD.