They all have the forms of the greatest strength with reference to the action of a vast rigid press of oversweeping ice from the north and northwest, and their surfaces have a smooth, rounded, overrubbed appearance, generally free from angles.

相对于来自北部和西北部的横扫冰层的巨大刚性压力的作用，它们都具有最大强度的形状，并且它们的表面具有光滑、圆润、过度摩擦的外观，通常没有棱角。