The Panmah Muztagh is a subrange of the Karakoram range, in Baltistan, a district of Gilgit-Baltistan, Pakistan.
 Its highest peaks are not particularly high by Karakoram standards, but they are exceedingly steep rock spires, unlike many of the peaks in the surrounding subranges.
 In particular, the highest of the Panmah peaks, Baintha Brakk (The Ogre) (7,285 m/23,901 feet), is a very difficult climb; it has seen only two ascents.
 The nearby Latok group is of similar difficulty.
 Both groups lie on the north side of the long Biafo Glacier.
The K1 class was a type of gunboat designed by the Kriegsmarine before World War II.
 The class was to have comprised four ships, which had been ordered under the provisional names "K1, K2, K3", and "K4".
 The four ships were ordered in November 1938, and were scheduled to have been completed by early 1942.
 However, the contracts for the four ships were canceled on 19 September 1939, two weeks after the start of World War II.
The Latok group is a small cluster of dramatic rock peaks in the Panmah Muztagh, part of the central Karakoram mountain range in Pakistan.
 They lie just to the east of the Ogre group, dominated by Baintha Brakk.
 To the immediate south of the Latok group lies the Baintha Lukpar Glacier, a small tributary of the Biafo Glacier, one of the main glaciers of the Karakoram.
 On the north side of the group lies the Choktoi Glacier.
Baintha Brakk (Urdu: بائنتھا براک‎ ) or The Ogre is a steep, craggy mountain, 7285 m high, in the Panmah Muztagh, a subrange of the Karakoram mountain range.
 It is located in Gilgit-Baltistan, Pakistan.
 It is famous for being one of the hardest peaks in the world to climb: twenty-four years elapsed between the first ascent in 1977 and the second in 2001.
K2 (Urdu: ‎ ), also known as Mount Godwin-Austen or Chhogori (Balti and Urdu: ‎ ), is the second highest mountain in the world, after Mount Everest, at 8611 m above sea level.
 It is located on the China-Pakistan border between Baltistan, in the Gilgit-Baltistan region of northern Pakistan, and the Taxkorgan Tajik Autonomous County of Xinjiang, China.
 K2 is the highest point of the Karakoram range and the highest point in both Pakistan and Xinjiang.

Question: Baintha Brakk and K2 are both names of what?
Answer: mountain