Stormy Point – one of the best preserved sequenses of river terraces in the world. Each major terrace formed during a period of cooler climate then the present. An increase of erosion in the Rangitikei River headwaters filled the valley with greywacke gravels. Each intervening period of warmer climate allowed the river to cut into these desposits, forming a deep gorge as seen at present. Continued uplift of the land, which is being tilted to face south, raised the older terraces above a level where they could be buried by each successive terrace forming episode. Fine silt particles were blown off each gravel terrace, deposited downwind across the landscape as a mantle to loess.