1959 Map of Collins Valley

Evidence of historical transit is etched across the terrain via the Anza Trail and various unnamed jeep trails that navigate the washes of Coyote Creek. This area, straddling the Riverside and San Diego county line, showcases the rugged isolation of Buck Ridge and the deep incisions of Alder Canyon. The presence of established survey markers like Elder VABM 3433 and Palms VABM 3121 provide fixed points for researchers tracing early twentieth-century land management and topographical study in the Colorado Desert.