William (Bill) Armstrong's photos with the keyword: horsetail clouds

Another view of horsetail clouds at sunset in the Frenchman River Valley. Taken on film, likely with a Minolta 600 si. Film and lens unknown.

The unscientific description for these clouds is horsetail. This was taken on film, likely around 2006, in the Frenchman River Valley, near the West Block of Grasslands National Park in Saskatchewan.