ZIMSEC O Level Geography Notes: Landforms resulting form Potholes
- These are circular holes bored into the solid bedrock of a river by pebbles and stones carried by the river.
- The rough river bed, mostly common in the upper course section or rivers, encourages turbulent flow
- Stones and pebbles can get caught up in depressions on the river’s solid river bed.
- The swirling and eddying motion of the flowing current causes the pebbles to spin and turn within these depressions widening them.
- The result are circular depressions called potholes.
- The diagram above shows how potholes are formed.
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