When Jerry Uelsmann sees Yosemite National Park, rocks float. So do clocks and flamingos. Nudes glide through white water rapids in images of the park so wild and personal that they expand the concept of nature photography. Since his first sojourn to the park at the invitation of Ansel Adams, Uelsmann's photomontages of Yosemite have taken us on a completely unique visual and psychological tour.