The Incas were an ancient South American civilization that flourished in the Andes Mountains from the 12th to 16th centuries. Their sun god was Inti, who was believed to be the ancestor of the Inca people and the creator of the universe. Inti was also associated with gold, fertility, and agriculture. He was often depicted as a golden disk with rays of light emanating from it. The Incas believed that Inti provided them with warmth and life-giving energy.