Tuesday, June 21, 2016

City of Rocks National Preserve in Idaho has the Window Arch, a rare granite arch



The City of Rocks is an out-of-the-way National Preserve in south-eastern Idaho where granite spires, domes, and loaves seem to pop out of the rolling plains. Historically, this area is famous for the pioneers on the California Trail heading west and having this landmark serve as a special stop along the way. Many of the pioneers signed their names on the granite rock using axle grease. This place is also famous with climbers for some of the clean granite rock that makes for excellent climbs. We climbed one of the easier climbs in the area before taking lots of pictures. Since granite rarely forms arches, we made a point of looking for this feature, Window Arch. It's right next to a parking area for camping off of the main road through the area. Window Arch appears to be on the verge of falling down. The horizontal pieces of the arch have split and are offset from each other. It looks like either or both sides could some day soon slide past the other and collapse. Granite might form arches when sheets of granite flake off in a process called exfoliation. If both sides of a dome-shaped granite rock flake off, there may be left behind the highest part of the dome or loaf left behind, thus making an arch.

This image was made by merging two images together to increase the amount of detail in the final image. Both images taken at ISO 100, f8.0, 1/180 sec. with a Canon Rebel xSi, with a focal length of 18 mm. Rick made a point of composing this image so that the sky and top of the tree would be clear of the underside of the arch.

Remember, it's not just a picture, it's a story!

Wednesday, June 8, 2016

Mono Lake tufa tower pointing at the moon




It's all a matter of perspective! While returning to Sacramento from a trip to Death Valley, we stayed for one night in the Mono Lake area so that we could get early morning images in the Mono Lake basin. From the south shore, at what used to be the state park, we hiked out to the shore to look at the features and set up our tripods for photos of the lake and the tufa towers. Along the way, Rick noticed that the moon would be setting as the morning progressed and wanted to include it in some of his pictures. He lined up this image to include a tufa tower and the moon so that the tower appears to point to the moon. The early morning sun was lighting one side of the tower and the moon appears to be immediately above it.  In this shot, the moon appears to be the yin yang symbol.

Remember, it's not just a picture, it's a story!