正像风帆石的大小、形状不一，它们的组成物也在跑道干湖的各处各不相同。
Like the size and shape of sailing stones , its component also varies all over the Racetrack Playa .
跑道干湖是坐落在加利福尼亚国家公园死亡之谷中的一个干涸的湖床，海拔3608米。
Racetrack Playa is a dry lake bed located 3,608 feet above sea level in Death Valley National Park , California .
跑道干湖