Amen was the principal Egyptian state god in the New Kingdom, closely associated with Thebes at least as far back as the Middle Kingdom. He is known to have existed since at least the late Old Kingdom. Called "The Hidden One," he is associated variously with wind, water, and fertility, and was represented as a human, a goose, a ram, or a snake. He was often joined in the New Kingdom with the sun god Ra as Amen-Ra. Amen was a part of the Theban Triad which consisted of Amen, his wife Mut and son Khonsu, and their principal temples lay at Karnak. In his form of Amen-Kamutef, he was a member of the Hermopolitan Ogdoad.