Crossword Genius

Projection growing from a cave floor (10)

Ross

I believe the answer is:

stalagmite

(Other definitions for stalagmite that I've seen before include "One that grows up" , "Upward-rising cave deposit" , "Cave floor growth" , "Effect of dripping" , "One growing up in a cave" .)

I've seen this clue in the Sydney Morning Herald.
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