Proximity causes scientific revolutions: furnaces (due to the presence of coal) and river - which made the Iron Bridge both necessary and possible.

See the website on the "Valley of Invention"

From map to text : you may use the "layers" for interactivity, either to make an invisible image appear (see the section on Composite Places), or to make a text appear. This is a way of structuring topographical space. In the present case, it highlights the simultaneous presence of several complementary industrial activities in the same area, as a factor of technical breakthroughs.