What is the theme in The Solace of Open Spaces by Gretel Ehrlich?

Isolation is another theme in the book. One of the main causes of isolation in Wyoming is the weather. The weather changes in a flash and can wreak havoc on a ranch or herders and their animals. Another reason is that it can easily take 2-3 hours to get from one ranch to the next, a trip often made for dinner or some other social event to keep the ranchers from going stir crazy. Ehrlich speaks of one rancher with so much land, spreading across two states, that it is not unusual for him to put 100,000 miles on his truck without ever leaving the property.