This past weekend, I did the up-and-back-down version of the famous Narrows hike in Zion National Park. It was physically exhausting, since the hike involves nearly constant wading up a swift river with depths varying from shin- to thigh-high, but also immensely rewarding -- especially where the river was wall-to-wall and 30 feet wide, with vertical walls towering 1500 feet above. The temperature reached over 105 degrees that day, but in the canyon it was cool and comfortable.

The conditions in The Narrows makes casual photography difficult, so I have no photoset to show off, but I posted the above image to give you a sense of the scale. I'm the orange humanoid speck at the bottom of the opening.