This is what it looked like (above) from inside the boat as we negotiated the narrow canyons on our way to Rainbow Bridge National Monument. Each canyon, off the main river route, is marked with these buoy-type signs (below-right) that way boaters unfamiliar with Lake Powell, like us, will have a better chance of NOT getting lost. The last tour boat of the day passed us as we traveled up the canyon. We thought this was probably a good thing as the dock and trail won't be as busy when we get there. Only a few boats were tied up…