The name of the canyon that runs from Flagstaff down to Prescott ?

Yes, Oak canyon

Oak canyon?

What is oak canyon?

Oak Creek Canyon

Oak Creek Canyon is a river gorge located in northern Arizona between the cities of Flagstaff and Sedona. The canyon is often described as a smaller cousin of the Grand Canyon because of its scenic beauty. Traversed by: Arizona State Route 89A Length: 12 miles (19 km) North-South Did you know: Slide Rock State Park, home to a natural water slide along Oak Creek, is also located within Oak Creek Canyon.