36/60 piles of evenly shaped blocks of ice are seen so neatly laid that it seems impossible for them to be Nature's work. Again, a winding canyon may be traversed between icy walls 6 ft. high, or a dome may be formed that under renewed pressure bursts upward like a volcano. All the winter the drifting pack changes--grows by freezing, thickens by rafting, and corrugates by pressure. |