| 21. | A plunge pool forms at the bottom and deepens as a result of hydraulic action and abrasion.
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| 22. | Plunge pools can remain after the waterfall has ceased to exist or the stream has been diverted.
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| 23. | Other causes may be that the plunge pool is obstructed or the water flow is too shallow.
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| 24. | Archaeologists found two buildings, one of which housed a hot bath and the other a cold plunge pool.
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| 25. | The mosaics decorated the walls of a cold plunge pool in a bath house within a Roman villa.
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| 26. | These plunge pools are built to the same evaporative water losses and the need for potable water refilling.
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| 27. | These signs of glacial meltwater erosion are a series of potholes or plunge pools in the creek's valley.
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| 28. | However, they do come together in limited locations such as plunge pools at the base of the escarpments.
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| 29. | It is suggested that the name derives from the ancient practice of ducking witches in the plunge pool.
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| 30. | The abrasion of rock by sediment-loaded water sculpted walls and created plunge pools and teardrop-shaped streamlined islands .
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