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The Sliding Rocks of Racetrack Playa Mystery

The Sliding Rocks of Racetrack Playa Mystery – GEOLOGY.COM

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.

The truth: No one knows for sure exactly how these rocks move – although a few people have come up with some pretty good explanations.

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