Khan Tengri is a massive marble pyramid, covered in snow and ice. At sunset the marble glows red, giving it the name blood mountain in Kazakh and Kyrgyz (; ). Located just across the South Engilchek (or Inylchek) glacier, 16 km north of Jengish Chokusu, Khan Tengri was originally thought to be the highest peak in the Tian Shan because of its dramatic, steep shape, compared to the massive bulk of Jengish Chokusu. This perception was probably also due to Khan Tengri's visibility across the plains of southern Kazakhstan while Jengish Chokusu remains out of view of civilization. Khan Tengri is the highest peak in the rugged Tengri Tag subrange, also known as the Mustag, that also contains Chapaev Peak () and Gorky Peak (). Anatoli Boukreev considered Khan Tengri perhaps the world's most beautiful peak because of its geometric ridges and its symmetry.