Sunday, May 18, 2008
The first is in uranium country in NM. The circle you see is a rock shelter structure. I haven't yet seen the archeological reports for this area, so I can't tell you who built it or when. I'm not giving out any details of the location (the photo doesn't, either). This is to protect cultural resource sites from unscrupulous people.
The second is an example of a culvert placement gone bad. Hyper border collie mix for scale. There are actually three or four more in similarly bad shape along this NM creek, effectively stranding the residents in this canyon as they need to keep their cars on the other side of this crossing in order to travel. Just outside of the picture, there is a footbridge across the creek the residents use (including children and older folks who have to walk several miles from their homes to the footbridge).
The last is the Rio Grande in Colorado. The structure is a rock structure designed to effect bank stabilization and create fish habitat by working with, instead of against, the river's energy. I sometimes have a problem with the aesthetics of these structures, but they're better than some of the alternatives (gabion baskets, riprap, channelization).