In Death Valley, USA, a mysterious natural event puzzles many. Huge rocks slide across a dry lakebed called Racetrack Playa, leaving long trails behind. For years, no one knew how these rocks moved without animal help or strong winds. Scientists tested ideas like wind or magnetic forces but found no answers. In 2013 and 2014, researchers used GPS, cameras, and weather stations to watch the rocks closely. They found the rocks move only when rare weather comes together: after rain fills the lakebed with water, cold night freezes the water into thin ice sheets. Morning sun breaks the ice into large floating panels. Light winds then push the ice, and the ice pushes the rocks slowly across the soft mud. This slow sliding keeps going until the ice melts or the water dries up. This rare mix of rain, cold nights, and sun only happens a few times each decade in Death Valley because it is very dry and hot. The trails left by the rocks show different patterns based on wind and ice break-up. Racetrack Playa is now a popular spot for scientists, photographers, and travelers, especially in cooler months or right after winter rains when the sliding rocks come alive again. Visitors should prepare for rough roads to reach this fascinating desert wonder.