Karakoram of the ice-age valley glacier branches and main valley glaciers, had lengths up to . During the Ice Age, the glacier snowline was about lower than today. The highest peaks of the Karakoram are: The majority of the highest peaks are in the Gilgit–Baltistan region of Pakistan. Baltistan has more than 100 mountain peaks exceeding height from sea level. The naming and division of the various subranges of the Karakoram is not universally agreed upon. However, the following is a list of the most important subranges, following Jerzy Wala. The ranges are listed roughly west to east. From west to
Gilgit-Baltistan Silk Roads — Rock Carvings Along the Karakoram Highway". Many of these carvings and inscriptions will be inundated and/or destroyed when the planned Basha-Diamir dam is built and the Karakoram Highway is widened. The climate of Gilgit-Baltistan varies from region to region, surrounding mountain ranges creates sharp variations in weather. The eastern part has the moist zone of the western Himalayas, but going toward Karakoram and Hindu Kush, the climate dries considerably. There are towns like Gilgit and Chilas that are very hot during the day in summer yet cold at night and valleys like Astore, Khaplu, Yasin, Hunza, and