Buenos Aires National Wildlife Refuge West Unit Road

This forgotten corner of the Buenos Aires National Wildlife Refuge follows old ranch roads through 118,000 acres of restored Sonoran Desert grassland, past the crumbling adobe ruins of the original Arivaca Cienega Ranch headquarters. The route crosses Arivaca Creek multiple times through stands of cottonwood and mesquite, then climbs into rolling hills dotted with ocotillo and barrel cactus. Wildlife is abundant here — pronghorn antelope, javelina, and over 200 bird species including the reintroduced masked bobwhite quail that the refuge was created to protect.

Easy driving suitable for stock high-clearance vehicles, though creek crossings can become impassable during summer monsoons. The refuge road system is primitive dirt with some sandy sections and occasional rocky climbs. Best visited October through April when temperatures are manageable and wildlife is most active. No camping is allowed within the refuge, but dispersed camping is available on adjacent Forest Service lands. This is a peaceful escape from Arizona’s crowded 4×4 destinations, offering solitude and genuine Sonoran Desert wilderness less than an hour from Tucson.