The Mystery of the Sliding Rocks of Racetrack Playa. One of the most interesting mysteries of Death Valley National Park is the sliding rocks at Racetrack Playa (a playa is a dry lake bed). These rocks can be found on the floor of the playa with long trails behind them. Somehow these rocks slide across the playa, cutting a furrow in the sediment as they move. Some of these rocks weigh several hundred pounds. That makes the question: "How do they move?" a very challenging one. [Via]. For more in-depth information, including maps and additional pictures, see Paula Messina's website about the Sliding Rocks.
posted on Dec 2, 2007 - View this thread