The governing fact is adhesion. Steel on steel produces very little grip, which is efficient on the level and useless on a slope - so the route must be flattened…
One rock type, unusually pure and unusually porous, produces a landscape unlike anything around it - dry on top, wet underneath and covered in a grassland that only exists because…
Source: Wikipedia
There is a small piece of rural engineering that walkers cross constantly and rarely examine.
The problem it solves is truly awkward. A boundary must be continuous to hold…
Every terraced landscape is an enormous piece of engineering built by hand over generations, and every element of it answers a specific problem with a slope. Here are seventeen.
1.…
Most rock is worn away mechanically. Limestone is removed chemically, taken into solution and carried off in the water, and a landscape shaped by dissolving behaves unlike anywhere else. Here…
Almost every visible feature of a transmission line is a solution to one of two problems: keeping the electricity in the wire, and keeping the wire in the air. Here…