This causes the sapping of the rock above the area being eroded.
(This; causes; the sapping of the rock above the area being eroded) Context(This causes,List([0, 11))):(the sapping of the rock above the area; being eroded; )
This causes,List([0, 11))
This the sapping of the rock above the area
causes being eroded
the sapping of the rock above the area being eroded