Gasherbrum I (also known as Hidden Peak or K5) is the 11th highest peak on Earth, located on the border of China-Pakistan. Gasherbrum-I is part of the Gasherbrum massif, located in the Karakorum region of the Himalaya. Gasherbrum is often claimed to mean “Shining Wall”, presumably a reference to the highly visible face of the neighboring peak Gasherbrum IV; but in fact it comes from “rgasha” (beautiful) + “brum” (mountain) in Balti, hence it actually means “beautiful mountain.”
Gasherbrum-I was designated K5 (meaning the 5th peak of the Karakorum) by T.G. Montgomery in 1856 when he first spotted the peaks of the Karakorum from more than 200 km away during the Great Trigonometric Survey of India. In 1892, William Martin Conway provided the alternate name, Hidden Peak, in reference to its extreme remoteness. Gasherbrum-I was first climbed on July 5, 1958 by Pete Schoening and Andy Kauffman of an eight-man American expedition led by Nicholas B. Clinch. Richard K. Irvin, Tom Nevison, Tom McCormack, Bob Swift and Gil Roberts were also members of the team.

Name of Peak Gasherbrum-I Latitude: 35° – 43 N
Duration 50 Days  Longitude: 76° – 42 E
Elevation 8068-m (26,509 ft) Base Camp height 5000-M
Ranked: 11th (3rd in Pakistan) Best Period: June – August 
Location: Karakorum- Baltoro Skardu First ascent: July 5, 1958 by an American team
DAY ITINERARY
Day-01 Islamabad- Rawalpindi
Day-02 Drive to Chilas by Karakorum highway 11-12hrs
Day-03 Drive to Skardu 8-9hrs
Day-04 Drive to Askoli 6-7hrs 3000m
Day-05 Trek to Jhola 5-6hrs 3200m
Day-06 Trek to Paiyu 6-7 hrs 3450m
Day-07 Free day in Paiyu
Day-08 Trek to Urdukas 6-7hrs 4050m
Day-09 Trek to Goro-II (5-6hrs) 4380m
Day-10 Trek to Concordia 4-5hrs 4700m
Day-11 Trek to Gasherbrum base camp
Day-12/40 29 days for climbing
Day-41/45 Trek down to Askoli
Day-11 Drive to Skardu 6-7hrs
Day-11 Drive to Chilas 8-9hrs
Day-11 Drive to Islamabad 11-12hrs
Day-11 Farewell meeting in Alpine Club of Pakistan
Day-11 Transfer to Islamabad airport for international flight