A bison walks through the grasses of the Rocky Mountain Arsenal National Wildlife Refuge with the city of Denver, Colorado in the background.
![A bison walks through grass at the Rocky Mountain Arsenal National Wildlife Refuge. The city of Denver, Colorado is in the background. (© Tony’s Takes)](http://lh5.googleusercontent.com/-8URy-02MtLQ/VJc_5tISVAI/AAAAAAAAGV8/oA_1UbaIdEg/s710/2014-11-09%2B07-56-06%2B-%2B0015.jpg)
A bison walks through the grasses of the Rocky Mountain Arsenal National Wildlife Refuge with the city of Denver, Colorado in the background.