National Geographic : 1965 Jul
Collapsing sail saves a canoe from capsizing as it races toward Schloss Schonbiihel in the castle studded Wachau region. Bill Backer and Bruce Irvine jury-rigged the sail to take advantage of a fol lowing breeze. A gust proves too powerful, and Bruce releases saplings he has held together by hand. Master of the castle surveys his ramparts of sand beside the river near Lauingen, Germany.