In Simple Terms
Once a place for making dangerous chemicals, the Rocky Mountain Arsenal has turned into a haven for wildlife. After being left alone for years, nature has flourished, attracting animals like bison and bald eagles. This story shows how nature can recover and thrive when humans step back.
A Surprising Sanctuary
Originally, the arsenal was a site for producing chemical weapons, chosen by the U.S. Army after World War II for its remote location near Denver. Dangerous substances like mustard gas and white phosphorus were manufactured there, leading to severe pollution by 1982. However, a new and unexpected story began to unfold.
Despite the contamination at its core, a large area around the arsenal remained untouched, fenced off, and abandoned by farmers and developers for decades. This allowed nature to reclaim the land, with grasses growing and wildlife like deer, wild dogs, and birds of prey thriving.
The Clean-Up and Transformation
In the 1980s, the arsenal was designated a Superfund site, initiating one of the largest environmental clean-ups in U.S. history. This effort, costing around two billion dollars and spanning over twenty years, involved removing contaminated soil and treating groundwater to ensure environmental safety.
As the clean-up progressed, the government transformed the restored areas into a wildlife refuge. In 1992, the National Wildlife Refuge Act was passed, transferring the land to the U.S. Fish and Wildlife Service. By 2004, the refuge was opened to the public, becoming one of the largest urban wildlife sanctuaries in the country.
The Return of Bison and a Rare Predator
In 2007, 16 bison were brought from the National Bison Range in Montana, reintroducing these majestic animals to the area. The herd has since grown to about 250, drawing visitors eager to see them up close.
In 2015, the refuge began reintroducing the black-footed ferret, once thought extinct until a small population was found in Wyoming. This predator, which feeds on prairie dogs, is well-suited to the arsenal’s environment.
Conclusion
The story of the arsenal highlights how nature can thrive when left alone, even in places once heavily polluted. While the site may never be perfect, the isolation imposed by the chemical weapons plant has allowed wildlife to flourish, transforming the area into a natural sanctuary where life can prosper away from human interference.