On the US-Mexico border, ranchers like Eduardo Ríos Colores are turning to trincheras, small rock structures used for thousands of years, to address the impacts of climate change. These permeable barriers slow water flow, reduce erosion, and improve subsoil quality, allowing grasses and life to return to deeply eroded channels. In Sonora, where private rangelands cover over 80% of the landscape, conservationists and ranchers are collaborating to implement these structures as part of a broader regenerative ranching movement.