March 29, 2013
Photographer: Helga Schops
Summary Authors: Helga Schops; Jim Foster
The photo above showing a beautiful example of a type of icing known as aufeis was found in the Black Forest of southeastern Germany. It formed when water seeped out from the rock outcrop and froze soon after coming in contact with the subfreezing air. It's much more common in Arctic environments where it may form when groundwater is discharged to the surface and is instantly frozen. As seen here, successive discharges can result in a layering effect. Photo taken in early February 2013.