Generate an accurate image of a city fort from ancient India. The description is as follows. "The external circumference of the city and the outer road should be constructed based on the measurement of the royal road. It should be laid out around the entire city. The measurement of the land beyond the outer road should be done according to the royal road. Three circumferences should be drawn with an interval of one vyāma (a unit of measurement). The circumference should be drawn with the help of the khaṭa (a measuring instrument) and the ratha (a chariot wheel). Even if the circumference is not completed, the measurement should be taken from the diameter itself. One should mark the circumference using bricks and clay in the region of self-land. It can also be marked with stones or cow dung mixed with soil. With the help of the circumference and the measurement of the land, the boundary walls should be constructed. The entire region should be filled and levelled evenly. Having thus measured and examined, the circumference should be marked with stones or firmly fixed stakes. The circumference should be adorned with a variety of trees, fully covered with flowers and vines, and with clear and flowing water. In all directions, the enclosures should be filled with fragrant and attractive plants and pleasing to the senses. The outer part should be enclosed in all directions, covered with roots, creepers, and thorny plants. The upper part of the enclosure should be adorned with tall trees, and the middle part should be built with high and strong walls. With twelve hands extended, the middle part should have a width equal to ten widths of the hand. The length should be greater by eight hands, thus forming a rectangular shape. The height should be seventeen times the width [...]