Steamboat Geyser: Yellowstone National Park, July 2006 Steamboat Geyser is the world’s tallest geyser, though a major eruptions is unpredictable and infrequent. More common are smaller minor eruption like these which were only about 6 feet or so high, but when it goes it will shoot water 300 feet high. (via Robby Edwards’ Photos)

Valley Floor: Zion National Park, September 2001 After a stop at the Zion Lodge, we decided to take a hike. We hiked the Middle Emerald Pool Trail up and the lower Emerald Pool Trail back to the lodge. Along the way I took this photo of the canyon. The North Fork of the Virgin River is visible in the foreground. This was the river which created the canyon. (via Robby Edwards’ Photos)

Natural Bridge: Bryce Canyon National Park, September 2001 This enormous formation (so large I could not capture it in one photograph with the camera I had at the time) is named Natural Bridge. But it was not formed by a stream as a real natural bridge would be. This formation is an arch, which is formed by the combined forces of rain and frost working upon the rock. (via Robby Edwards’ Photos)