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When rock above a cave collapses, a sinkhole is formed.
It is called weathering.
It is called weathering.
A sinkhole.
When a volcanic cone collapses it forms a caldera.
When rock above a cave collapses, a sinkhole is formed.
When rock above a cave collapses, it forms a sinkhole. Sinkholes are depressions in the ground that are often caused by the erosion of underground caves or channels.
It is called weathering.
It is called weathering.
It is called weathering.
It is called weathering.
A sinkhole.
A sinkhole forms.
When a volcanic cone collapses it forms a caldera.
A shakehole (or sinkhole) - it can form an entrance to the cave, or block it entirely. Also swallow hole. It's important to realise that the existence of a shakehole does not necessarily mean an enterable cave lies below: the dissolved carbonate rock below may have been carried away in a multitude of fine conduits as in chalk, rather than a discreet passage.
Most sinkholes form when mildly acidic water dissolves limestone underground, this forms a limestone cave. A sinkhole occurs when the cave collapses.
It is called weathering.