More interesting things I've noticed

- at co-ordinates 43 degrees 30.777N and 102 degrees 39.196W are a zillion white dots that are connected by tracks. These dots seem to be between 2 and 2.5m in diameter.
The base that the area is probably worked from can be found at 43 degrees 30.732N and 102 dgrees 38.287W where there are buildings and what looks like vehicles parked there with a roadway snaking into the area under question.
One thing (among many) that puzzles me are the large white areas. My first thoughts were that it was snow but as the season is the end of summer, I ruled that out. It was further ruled out by the fact that the white areas are lower than the dark areas. Could it be salt or some other mineral that has leached out of the soil?
Now that I've got the paint off my hands I can eat the rest of my lunch.