<P> The Grand Canyon of the Yellowstone is the first large canyon on the Yellowstone River downstream from Yellowstone Falls in Yellowstone National Park in Wyoming . The canyon is approximately 24 miles ( 39 km ) long , between 800 and 1,200 ft ( 240 and 370 m ) deep and from . 25 to . 75 mi ( 0.40 to 1.21 km ) wide . </P>
where is the grand canyon of yellowstone located
on the Yellowstone River downstream from Yellowstone Falls in Yellowstone National Park in Wyoming