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Horseback party at west entrance to Zion Tunnel. This tunnel will shorten the distance from Zion to Bryce by ... NARA .tif Scope and content General notes Local identifier ZBCZ Department of the Interior National Park Service NARAAuthor Grant George Photographer File HorsebackpartyatwestentrancetoZionTunnel ThistunnelwillshortenthedistancefromZiontoBryceby