As you might have guessed (but it is better to know than guess), the true purpose of my excursion into eastern Washington was to document signs of the presence of other-worldly beings. The cover story of "photographing the landscape for a web site" fools everyone, even agents of the law.
Here we see concentric circles that appear to be the result of the circular harvesting of hay. In fact, they are classic signs of UFO activity. (NOTE: do not confuse this with the "crop circle" phenomenon that got England in a tizzy for several years.)
The scene depicted here is evidence of a well-known Alien practice: flying in circles to evaluate an area as a possible landing site. The tracks were made by a defective "trailing magnetic emulsifier," a device used to obliterate signs of one's passage. Such tracks are found in many places in eastern Washington, no doubt due to the fact that this part of the state is sparsely populated and easy to navigate. It is believed that one craft is responsible for all the markings.