I apologize. I presumed you were familiar with the Mt. Graham area.
Columbine is an area near the top where there are numerous private cabins. Also, there is a campground called "Horse Corrals" is located near there. I believe
this GPS track ( http://hikearizona.com/gps=7156
) starts and stops at the Horse Corrals campground. Also, there is Forest Service housing in that area. There's a nice tourist information center there, too. Though, my experience is - it's frequently closed.
The distance from Columbine to Riggs Lake is about 5 miles. The last time I drove on that section was 30+ years ago. Back then, the road was very
rough. I have to presume it's been improved since then. YMMV. (Your Mileage May Vary)
Be sure to take a hummingbird feeder with you. After they get used to it, you can hold the feeder in your hands, and they will light on your fingers while feeding. Very cool! So light, they almost tickle!