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This controversial fence in the San Pedro Riparian National Conservation Area has contributed to the disruption of migrations by some of the 300 animal species in the area and increased the amount of human and vehicle traffic over previously untraveled land.

Photo credit: U.S. Department of Homeland Security

The San Pedro Riparian National Conservation Area (RNCA) consists of approximately 57,000 acres of public land in Arizona's Cochise County, adjacent to the Mexican border and the riparian zone (where land meets river) of the San Pedro River. It was designated as an RNCA by Congress in 1988 in order to protect the local ecosystem, one of the few desert riparian ecosystems to survive the settling of the American Southwest. Administered by the Bureau of Land Management, the RNCA ...

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