We had a most interesting day yesterday and it did not end well, as we nearly got swallowed up in the back country of Wyoming! More on that later. North of Rock Springs is a corral for wild horses. Outside of the coral is a shelter whereby visitors can view them and also receive information regarding the horses presence in the West and how to adopt them. There are over 40,000 free-roaming horses and burros through out western states, and over 200 herd management areas administered primarily by the Bureau of Land Management. When the herds increase and there is limited vegetation and water to sustain the animals it then becomes necessary for the BLM to round them up. The horses are descendants of the horses brought over by Spanish explorers in the 16th century, so technically they are described as feral. Many people refer to them as mustangs, which is Americanized slang for the Spanish word mesteno, or "stray".