The floating gardens of Xochimilco, Mexico City.

(part of the #6hexcodes weekly illustration challenge with the theme:"Postal of my City"). Abstracted is the essence of one of the most relevant agricultural vestiges in the world.

The canals of Xochimilco are a vestige of the Aztec agricultural technique of using "chinampas" to extend arable land in wetland areas. Chinampas are raised agricultural fields between canals. They are formed by rooting rectangular cane frames to the lake floor and filling them with alternating layers of aquatic weeds, muck, and earth until they rise up about one meter above the surface of the water. Willow trees are planted along the edges of the fields and their roots help to contain the chinampas.This agricultural technique shows the ingenuity of the Aztecs and their ability to adapt to their surroundings. Chinampas allowed for intensive farming of swampy areas and allowed the Aztec empire to sustain a large mexican population.