Answer: mountainclimber

AnswerCrossword Clue
MOUNTAINCLIMBER

"You might call me a topologist," said the ...

MOUNTAINCLIMBER

One headed for the top

MOUNTAINCLIMBER

Hillary, notably

MOUNTAINCLIMBER
Hillary, for one
MOUNTAINCLIMBER
One ascending Pikes Peak
MOUNTAINCLIMBERSwitzerland's Raymond Lambert, for instance.
MOUNTAINCLIMBERSir John Hunt, for instance.
MOUNTAINCLIMBERHe aims high
MOUNTAINCLIMBERAlpinist
MOUNTAINCLIMBERCLIFF is a ...