Posted to YouTube by Grand Canyon National Park on Wednesday, the video captures in 1 minute what happened for half an hour in real time.
The phenomenon is known as 'cloud inversion' and occurs when cold air is trapped in the bottom of the canyon, topped by warm air. While it is a rather rare happening, it's the second time in six weeks that it happened at the US heritage site and world wonder.
A new bi-weekly newsletter by wine editor Daléne Fourie. The newsletter will serve as a guide for those who make wine, those who want to learn more about wine, and those who simply just love wine.