I was headed east on Interstate 40 in Arizona just before sunset. A huge thunderstorm was gathering strength in front of me, and behind me the sun was about to dip below the horizon.
The setting sun was bouncing gorgeous shades of gold off the rocky cliffs that lined both sides of the the highway. Suddenly, a vivid, full spectrum rainbow appeared painted against the black eastern sky. Its ends seemed to be anchored in the illuminated cliffs.
I pulled off the freeway to stop and take it all in. Within minutes, cars were stopping on both sides of the freeway. People got out of their cars to take pictures, show their kids, and just marvel at the spectacle.
It was the Arizona desert at its most magnificent!