Stock photography, photos: Alder twigs with hoar frost Stock photos of Alder twigs with hoar frost Photograph: © Klaus-Peter Wolf Click for a larger image and more information Keywords associated with this stock photo: Alder, covered, Ast, Baum, blau, close, Detail, Frost, Himmel, Makro, Nahaufnahme, Raureif-, Reif, Schnee, verschneit, weiß, Winter, Zweig, detail, blue, branch, close, hoar, hoarfrost, macro, sky, snow, snowy, tree, twig, white, winter, Erlenzweige, frost, hoar, Raureif, twigs, up, kpwx_040123_013