This over-extraction of groundwater from the old clay lake bed has been causing the land upon which the city rests to collapse and sink.
The city rests on the heavily saturated clay of the former Lake Texoco.
He added, "The department and the city will not rest until those who have performed this barbaric act are found."
That the city rests on millions of wooden stilts pounded into marshy ground is well known.
The city of Chicago, whose team has claimed five championships in the 1990's, can rest easier.
The city rests at 997 feet above sea level.
The city primarily rests on what was Lake Texcoco.
Although none of the lake waters remain, the city rests on the lake bed's heavily saturated clay.
Now, it appears, a victorious city cannot rest easily even after a contract has been signed.
The city rests approximately 1,000 meters (3,280 ft.) above sea level and its topography is fairly flat.