8.3.4. Blow holes and Geos

Hole on the roof of the cave is known as blow hole. When the lines of weakness occur on the roof of a cave, hydraulic action of waves leads to the collapse of joint blocks from the roof and leads to the development of a hole on the roof.

The enlargement of blow holes and continued action of waves weakens the cave roof. When the roof collapses, a long narrow inlet, or creek, develops. Such deep and long creeks are called geos

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