High rise central block (6)

I believe the answer is:

massif

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'block' is the definition.
(I have seen 'Block of mountains ' mean 'massif' so perhaps 'block' could also mean 'massif')

I can't explain the remainder of the clue.

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(Other definitions for massif that I've seen before include "Mountainous block" , "series of peaks" , "Geographical formation" , "mountain peak" , "Compact group of mountains" .)

I've seen this clue in The Globe and Mail.

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