 The developers of photographic technology describe the difficulty of capturing the Racetrack's stealthy rocks, as movements only occur about once every three years, and they believed, lasted about 10 seconds.Their next identified advancement was wind-triggered imagery, vastly reducing the ten million seconds of nontransit time they had to sift through.It was postulated that small rafts of ice form around the rocks and the rocks are buoyantly floated off the soft bed, thus reducing the reaction and friction forces at the bed.