Box Canyon of the Hassayampa Trail Professional Review and Guide
"This trail, close to Wickenburg, is popular with locals and visitors for its stunning, varied scenery and a rare chance to dip your toes in a desert river. Although the river flows year-round, for much of the time it flows underground, leaving a wide, sandy, dry wash on the surface. Most of the year, the first part of the trail is deep sand with no water. Because the sand is deep, you will probably need to lower tire pressures. There are many vehicle tracks to follow—they all go the same way, so pick the best-looking route up the wash.
Special Attractions: Ghost town of Stanton and historic Octave Mine; Old cemeteries at Octave and Weaver; Easy, quiet trail through spectacular desert scenery close to Wickenburg. High-clearance 4WDs are recommended, though most stock SUVs are acceptable. Expect a rough road surface with rocks larger than 6 inches, but there will be a reasonable driving line available. Patches of mud are possible but can be readily negotiated; sand may be deep and require lower tire pressures. There may be stream crossings up to 12 inches deep, substantial sections of single-lane shelf road, moderate grades, and sections of moderately loose road surface."