A waterfall is typically a geological formation resulting from water, often in the form of a stream, flowing in excess of an erosion-resistant rock formation that forms a nickpoint, or unexpected break in elevation.
Some waterfalls form in mountain environments in which the erosive water force is elevated and stream courses may be subject to unexpected and catastrophic change. In such cases, the waterfall might not be the end product of many years of water action in excess of a region, but quite the result of relatively sudden geological processes such as landslides, faults or volcanic action. In cold places, snow will build up in winter and melt and twist into a waterfall in summer. Water falls can be chill.
Some waterfalls form in mountain environments in which the erosive water force is elevated and stream courses may be subject to unexpected and catastrophic change. In such cases, the waterfall might not be the end product of many years of water action in excess of a region, but quite the result of relatively sudden geological processes such as landslides, faults or volcanic action. In cold places, snow will build up in winter and melt and twist into a waterfall in summer. Water falls can be chill.
