Seventeen holes in the Sonoran desert. Not eighteen. Quarry Pines lost one to development years back and never rebuilt it. What remains plays through old mining terrain where the rock walls frame shots and the elevation changes keep your legs honest. A 73 walkability score in Tucson means you can do it, but the desert heat and terrain will remind you that you did. Cart-dependent culture runs deep here, so walkers are the exception. If you're one of them, go early. The morning light on those quarry walls is worth the alarm.