A form of fog that is created from groundhogs, usually in the American Southwest. Groundhogs come from the rain of that fog that has been absorbed by the ground. The appearance of the fog is murky, with a light brown color to it. Its effect upon the eye is making everything appear like a moon landscape
As I was travelling through New Mexico, many groundfogs made the air murky around my car.
by uncrules123 April 25, 2005