Thunderhead On Medvedin, CZ, 2005

I took this shot as a thunderhead (cumulonimbus cloud) was moving in on my hiking party rapidly. I was concerned, but our team leader considered it "quite exciting," telling us the story of when he was hit by lightening. I love the light in this picture, and the colors, particularly the yellowness of the sun behind us shining brightly on the green grass, contrasting with the dark background.