Dirt taken to cave (6)

I believe the answer is:

grotto

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'cave' is the definition.
(I know that grotto is a type of cave)

'dirt taken to' is the wordplay.
'dirt' becomes 'grot' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'taken' says to put letters next to each other.
'grot'+'to'='GROTTO'

Can you help me to learn more?

(Other definitions for grotto that I've seen before include "Santa's cave" , "(Imitation) cave" , "Fancy cave" , "Type of cave, often with religious significance" , "Small cave as at Lourdes" .)

I've seen this clue in The Mirror.

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