Stock photography, photos: Pebbles and Ice Stock photos of Pebbles beneath ice of the Merced River in winter at Yosemite National Park. Shot with large format 4x5 and Fuji Velvia transparency film. Photograph: © Lon Overacker Click for a larger image and more information Keywords associated with this stock photo: national park, yosemite, rocks, ice, frozen, pebbles, background, texture, winter, cold