"Definition : Waterfall" Waterfalls & Cascades Tip by coceng
Waterfalls & Cascades, Plitvicka Jezera National Park: 12 reviews and 23 photos
Most waterfalls are the result of many years' of action of water on the underlying strata. Typically, a stream will flow across an area of formations, and more resistant rock strata will form shelves across the streamway, elevated above the further stream bed when the less erosion-resistant rock around it disappears. Over a period of years, the edges of this shelf will gradually break away and the waterfall will steadily move upstream. Often, the rock strata just below the more resistant shelf will be of a softer type, and will erode out to form a shallow cave-like formation known as a rock shelter (also known as a rock house) under and behind the waterfall.
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