Horses thundering across the countryside toward a pasture. It is as iconic a symbol of America, particularly the West that was, as anything in our collective history. And now you can see its majesty captured again.

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The Humane Society of the United States posted a video to its website and YouTube channel showing 110 rescued horses charging down a dirt road and into a new pasture at the Duchess Sanctuary in Oakland, Ore. The viral video has topped 172,000 hits to date.

Duchess Sanctuary is comprised of 1,120 acres due south of Eugene and was first established in 2008, according to the Fund For Animals. Much like dogs, cats, and other rescue animals, horses are often mistreated, or used for scientific and research purposes.

The sanctuary is home to around 200 horses, many of them victims of the pregnant mares' urine (PMU) industry. PMU is used to produce estrogen and hormone-replacement drugs. These drugs are often made by keeping mares constantly pregnant, according to Equine Advocates

The website reports that some 90,000 mares are currently being used in the PMU industry in China, while the process has been frowned upon in the United States due to the 2002 Women's Health Initiative, which found that using PMU increases the risk of blood clots, stroke, breast cancer, dementia, and other debilitating and life-threatening conditions.