The Pakistani definition of a mountain according to the Ministry of Tourism in Islamabad is a peak higher than 6500 meters, 21,450 feet. Therefore you dont need permits for peaks lower than that mark. Anything higher, or if you are hiking within 20 km of an international border you will need permits. For a permit, you need to either: 1. Licensed mountain guide OR 2. Pakistan Army Liason Officer (LO) to guide you along the way. The guide/LO has to be equipped with gear that will allow him to hike with you till the base camp of your peak.
This information is a public crowdsourcing effort between the Access Fund,
and Mountain Project. You should confirm closures, restrictions, and/or related dates.
This mountain is a little short of being 8000 meters but is the most technical and gorgeous peak in the Gasherbrum Group. The famous 'shining wall' was first climbed by Walter Bonatti.
From Rawalpindi catch a bus to Skardu OR fly from Islamabad to Skardu. From Skardu get a private jeep hire which will take you to Askoli village. From Askoli you follow a "trail" through the Braldu valley and onto the Baltoro Glacier. You can get to Concordia in about a week. From Concordia the basecamp to G4 is about a 5-6 hour hike.