BLM land good for a night or two
Just outside of Kingman there are several places to stay for the night. Plenty of spots at the bottom of the road, but close to highway and noisy. If you drive up a couple more miles there are several dirt roads to pull off on. I stayed about 1.5 miles up and found a decent spot with some nice views of the mountains. There were several other campers fairly close. You could still hear the noise from the highway. I have Verizon and had excellent signal.
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Month of VisitMarch