Editing Guanajuato (city) (section)

===The underground tunnels of Guanajuato===
The Guanajuato underground tunnels are a network of wide channels that help lead traffic away from the city center. These tunnels have different layer crossroads and underground junctions. The tunnels are used for traffic which is heading in an eastwards direction. The westward direction passes through the center of Guanajuato. All of the tunnels have footpaths and even some of the bus stops are subterranean.

The tunnel system of Guanajuato was built to prevent flooding. Túnel La Galereña is the longest tunnel of this network and was excavated in the early 19th century to lead the Guanajuato River away from the center of the city. In 1960s the old river tunnels were strengthened, as they were in a bad condition and showed signs of collapse and subsidence. After the reconstruction, they were converted into a road tunnel. The first road journey was in 1961. But the old tunnels were of a suitable size for cars, medium-sized bus and vans but prevented larger transport getting into the city. A second tunnel was dug during the late 1960s, which diverted the river much deeper. Several additional tunnels were excavated during the 1990s.<ref>{{cite web|url=https://mexicanroutes.com/guanajuato-tunnels/|title=Guanajuato tunnels|date=2 February 2020|publisher="Mexican Routes" [mexicanroutes.com]}}</ref>