Its None other then the Mighty Nangaparbat ."The Killer Mountain "
Your were lucky to get clear view at the top, as not many people have seen Nangaparbat from the top of mushkpuri due to clouds...i have been to several times to Mushkpuri , But it was only once that ,One fine day on 11th Jan 2014 , I saw clear view of nangaparbat from mushhpuri...