Ala-ud-Din's Gateway. Doorway on the southern side [Alai Darwaza, Qutb]

Note.—The white marks on the left of the Photograph represent feet, as measured on the wall.

Cole, Henry Hardy. Photograph XXI. Doorway on the Southern Side In The Architecture of Ancient Delhi: Especially the Buildings Around the Kutb Minar. Arundel Society, 1872.