<Dd> On 27 July 2014, Garrett Madison led a team of three American climbers and six Sherpas to summit K2 . </Dd> <Dd> On 28 July 2017, Vanessa O'Brien led an international team of 12 with Mingma Gyalje Sherpa of Dreamers Destination to the summit of K2 and became the first British and American woman to summit K2, and the eldest woman to summit K2 at the age of 52 years old . She paid tribute to Julie Tullis and Alison Hargreaves, two British females who summited K2 but lost their lives on descent . Other notable summits included John Snorri Sigurjónsson and Dawa Gyalje Sherpa who joined his sister (Dawa Yangzum Sherpa), becoming the second set of siblings to summit K2 . Both Mingma Gyalje Sherpa and Fazal Ali recorded their second K2 summits . </Dd> <Dd> First full ski descent on K2 by Andrzej Bargiel: Polish mountaineer and mountain runner Andrzej Bargiel (30), has become the first person in the world to ski down K2 (8611m). He reached the summit of K2 on 22 July 2018 morning at around 11: 30am and reached the Base Camp at around 7: 30pm local time on the same day on ski . </Dd> <Ul> <Li> 1987 / 1988 - Polish - Canadian - British expedition led by Andrzej Zawada from the Pakistani side, consisting of 13 Poles, 7 Canadians and 4 Brits. 2 March Krzysztof Wielicki and Leszek Cichy established camp III at 7300 meters above sea, followed by Roger Mear and Jean - Francois Gagnon few days later . Hurricane winds and frostbite forced the team to retreat . </Li> <Li> 2002 / 2003 - Netia K2 Polish Winter Expedition . The team of fourteen climbers was led by Krzysztof Wielicki, and included four members from Kazakhstan, Uzbekistan, and Georgia . They intended to climb North Ridge . Marcin Kaczkan, Piotr Morawski and Denis Urubko established camp IV at 7650 meters above sea level . The final ascent started by Kaczkan and Urubko failed due to the destruction of the tent by harsh weather in camp IV and Kaczkan's cerebral edema. . </Li> <Li> 2011 / 12 - Russian expedition . Nine Russian climbers attempted K2's Abruzzi Spur route . They managed to reach 7200 meters above sea level (Vitaly Gorelik, Valery Shamalo and Nicholas Totmyanin), but had to retreat due to hurricane winds as well as frostbite on both of Gorelik's hands . After their descent to base camp and an unsuccessful call for Gorelik's evacuation (helicopter could not reach them through the worsening weather), the climber died of pneumonia and cardiac arrest . Following the tragic incident, the expedition was called off . </Li> <Li> 2017 / 18 - Polish National Winter Expedition led by Krzysztof Wielicki, consisting of 13 climbers, started in the end of December 2017 . The team initially attempted to summit via the south - southeastern spur (Cesen route), switching to the Abruzzi Spur after an injury on the previous route . Via the Cesen / Basque route they reached up to 6300m, while on the Abruzzi Spur route they reached up to 7400m . However, Denis Urubku reported that during his solo attempt he probably reached up to 7600m . </Li> </Ul>

What is the height of k2 and who conquered it first