The Great Himalayas (also known as Greater Himalayas or Himadri) is one of the four parallel sub-ranges of the Himalayas. It is the highest in altitude and extends for about 2300 km from northern Pakistan to the Indian state of Arunachal Pradesh, passing through China, Nepal, and Bhutan. The sub-range has an average elevation of 6,100 m and contains many of the world’s tallest peaks including the eight-thousanders and Mount Everest, the highest peak on Earth. The range is mainly composed of granite rocks with permafrost and consists of many glaciers including Gangotri, Khumbu, and Satopanth Glaciers.