OK, more formally known as a lateral move irrigation machine, these things are just amazing. They have an astonishing amount of electronics, including servo motors that move the wheels.
I took this snap in the winter, in Alsace. This seems to be a so-called two wheel model, since there are two wheels per assembly.
I tried to look up how much one of these babies cost (capital costs, not operating costs), and I was surprised to find a few things. First, the costs are usually reported per hectare or acre. Second, there is a huge range in the costs, from USD 300 per acre to USD 6’000 per acre, depending on the features and functionality.