Flat Bobby at the Windmill Skeleton

Flat Bobby at the Windmill Skeleton, originally uploaded by Pink Pepper Photo.

I can only guess that this windmill at one time produced drinking water for cattle. It is out in the sink, which can get very boggy, and not a good place to build a house. The water on the sink is saline as there is no outlet, so it would not be good for livestock.
The Humboldt Sink is a large shallow lake when it has water in it, and is where the Humboldt River ends in Nevada. The Humboldt River begins in eastern Nevada in the Ruby Mountains, southeast of Elko.