The Grand Canyon is well known for it's whitewater, but the rapids are remarkably difficult to catch on camera without highly inconveniencing everybody. But to give you an idea, here's a shot of Granite from a trip several years ago:
Here's Mrs. Peculiar beside Tapeats Creek, an intursion of moist lushness into a vertical, stony desert:
A major tributary of Tapeats Creek is Thunder River, which bursts out of a hole in a limestone cliff and cascades without delay straight down the side of the Grand Canyon. Click to enlarge, and note the three hikers just left of center for scale:
Looking back towards Tapeats from Thunder Spring. Our more geologically astute readers will note a visibly slanted pink layer at the canyon bottom. That is Shinumo Quartzite; it and its siblings of the Grand Canyon Supergroup were laid down flat in Proterozoic times, tilted to their present angle, eroded, and then covered with Tapeats Sandstone at the bottom of a Cambrian sea, followed by the many, many other sedimentary layers of the Colorado Plateau:
A little downstream from Tapeats, Deer Creek falls from a sandstone slot 150 feet into the Colorado. Sorry about the lack of scale; a person at the base of the falls would be treading about eight feet of water in the pool while being peppered with bullets of spray:
Finally, a shot of the idyllic Havasu Creek. Everyone on earth would want to live there if it weren't scoured by 20-foot walls of water every decade or so:
I do have some worthwhile shots of the less-photographed lower canyon, but they aren't scanned and I'm not optimistic about making that happen by Sunday.