I'd read about this new trail system in the SW part of Tucson called Robles Pass Trails Park with a 1000 acres and decided to do a recon walk on it. There's no signage yet and I look forward to seeing that posted.
At the start from Irvington Road, we immediately encountered some stone structures that looked the work of the CCC. I have no idea about their history. We ran into several other hikers and a horse and rider. The trail is easy with light climbing and the views are truly beautiful. Some spring flowers were showing: brittle bush, fairy duster in particular.
I will print off the city trail map and take next time so I'll understand how the trails hook up. It's a keeper and we'll return for more hiking. That would be at http://www.pima.gov/nrpr/parks