Avalanche lilies are one of the first flowers to bloom after the snow melts in the mountains.  For a brief period, hillsides such as this turn white with flowers instead of snow.  This image was taken in Olympic National Park, Washington state.

Nikon D100 with Nikon 17-35mm AFS f/2.8 lens. Shot at f/22 for 1/125 second. 2-stop graduated neutral density filter. Camera resting on the ground.