Keywords: yellowstone yellowstone national park yellowstonenationalpark winter visitor activities visitoractivities piste mountain snow landscape outdoor sport snowbank Cross-country ski tracks at the top of Snow Pass; Diane Renkin; January 2016; Catalog #20492d; Originial #P1090713 Cross-country ski tracks at the top of Snow Pass; Diane Renkin; January 2016; Catalog #20492d; Originial #P1090713 |