Dusk, the fleeting period of twilight between sunset and nightfall, is perhaps the most beautiful light of all. What we are seeing, of course, is the lingering reflection of the fading sun itself on the atmosphere. It is dark enough to be night, yet light enough to be day. The prevailing colors of twilight are purple and violet, colors that soothe the soul and stimulate the imagination. In this image, an autumnal harvest moon is rising over the lake, and I made this image just as two white pelicans glided below it. The lake behind them is dotted with hundreds of ducks and grebes, and the purple hills on the far shore reach out to embrace the rising moon hanging above them.