Along with the construction process of an irregular terrain which may contain dumps, drains, elevations, or mere slopes, it is necessary to carry out a prior process of ground levelling, which often implies having to bring in foreign materials, shredded into very small pieces so as to successfully cover the gaps in an even manner. After the decree for the consolidation of Lake Texcoco's terrains in 1971 was issued, hundreds of hectares occupying the muddy bottom of an ancient lake were rendered brownfield, prompting all kinds of infrastructural, real estate, and touristic projects: inside the archives housed in the Conagua (National Water Commission) offices, covered with mites and dust, lie the copies of typewritten development projects for Lake Texcoco, proposed soon after the new territory was constituted. The terrains, once the lake was dessicated, were metaphorically transformed into sheets of paper, wrinkled and stretched again, needing to become levelled, even if such terrains were not assigned to any concrete project. The mere raw possibilities of brownfield land incite its occupants to domesticate and homogenize it, to make it available: pure possibility, pure future. [...]