On the report made by Parsons and Morett about their archaeological expeditions on Lake Texcoco’s terrains during the 1980's and 1990's, there is a mention of a landfill site made from debris brought from the Federal District; such debris was deposited beside the road that had just been opened by the National Water Commission (Conagua). Amongst the findings within the landfill's debris were archaeological tepalcates (ancient Mexican ceramic objects), carved stones, and other objects belonging to the ancient indigenous world, mixed and confounded with modern urban materials. Archaeologists tell how part of their fieldwork took place within such accumulations of debris, learning to distinguish the more valuable materials amongst the more recent construction rubble. They found millenary pieces mixed with today's objects; in this mix, the mundane collided with the archaeologically valuable. [...]