Spur Cross Ranch Conservation Area is a protected area in Arizona. It borders Tonto National Forest. Maps of the area can be found here: https://www.maricopacountyparks.net/assets/1/6/spur-cross-8x11.pdf
It can be accessed through Spur Cross Trailhead.
There is no overnight camping allowed in Spur Cross Conservation Area, however many people park at Spur Cross Trailhead and hike through to Tonto National Forest to camp.
There is a $3/person fee to use the conservation area.