High-altitude bases offering exceptional aspect from Alps (5,9)

I believe the answer is:

space platforms

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'high-altitude bases' is the definition.
I can't tell whether this definition defines the answer.

'exceptional aspect from alps' is the wordplay.
'exceptional' indicates an anagram (an unusual or exceptional ordering of the letters).
'aspect'+'from'+'alps'='aspectfromalps'
'aspectfromalps' anagrammed gives 'SPACE PLATFORMS'.

'offering' acts as a link.

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I've seen this clue in The Guardian.

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