There is an unusual rock formation found in the remote Mono Lake in California. It is called “tufa tower” with spires and knobs composed of calcium carbonate. It is formed due to an interaction between the freshwater springs and alkaline lake water. We wanted to see them and got there just before dark. There was just enough light for our hike out to the lake to see them. The moon added a cool feature to our viewing. There was a lot of bird activity around the lake. Because of the water resource issues in California more and more of these towers are viewable. The hike from the parking lot was not long and the time of day we visited made the temperature fantastic. We stayed about a half an hour.