| hanging valley n. A tributary valley that joins a main valley where the latter has been deepened, usually by glacial erosion, resulting in a steep drop from the floor of the tributary valley to the floor of the main valley. |
hanging valley
Noun
Geog a tributary valley that enters a main valley high up because the main valley has been deepened through erosion by a glacier
hanging valley (h ng  ng) A side valley that enters a main valley at an elevation high above the main valley floor. Hanging valleys are typically formed when the main valley has been widened and deepened by glacial erosion, leaving the side valley cut off abruptly from the main valley below. The steep drop from the hanging valley to the main valley floor usually creates cascading waterfalls. |
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