Collection of wind-eroded rocks of Colorado Desert, 1904

Photograph of a pile of wind-eroded Colorado Desert rocks near the Mexican border 30 miles west of Calexico, 1904. Shapes include balls, plates, coral, barbells, and hoops.1904年拍摄于卡莱克西科以西30英里、毗邻美墨边境的科罗拉多沙漠内的风蚀岩石堆照片。该组岩石的形态包含球状、盘状、珊瑚状、杠铃状及环状。