Beautiful ink/mauve/light purple geranium

Did not takes all measurements I could have, but here is an estimate.

Not G. caffrum - it has leaves wrong.

Not G. multisectum - it has eaves wrong

Maybe not G. flanaganii - it has leaves too green, maybe not divided enough.

Not G. schlechteri - it has leaves wrong are not divided enough.

So it could be G. pulchrum even if it is found at marginally to high altitude for specimen. Other known characteristics do not contradict id.