The Lake Texcoco basin, in one of its more superficial geological layers, contains a mud of a soggy, slippery, and volatile nature: with small changes in pressure from the lower layers, or with a small shift in the tectonic plates sustaining it, the muddy water sinks into one side of the basin, lifting up a protuberance of equal magnitude elsewhere. The lake, for thousands of years before the arrival of Hernán Cortés to the Bridge of the Briggs, underwent constant changes in its shape; the malleable condition of its clayey floor along with the region’s climate made the waters descend during times of drought and heat, to later reflood and connect with its four adjacent lakes in a single and immense contour. As long as water still remained in the basin, the shore would never remain in the same place. [...]