About Boulder Narrows
This is the largest boulder in the river along the Grand Canyon. It’s positioned approximately center in the river, with most rafts opting going right of it. Driftwood from the 1957 highwater event still rests on top of this rock. This photo, taken on June 9, 1957, shows the boulder just underwater with flows at 114,000 CFS.
This video gives you a perspective of just how large this boulder is. Notice the driftwood?