Ladakh – a word which means “land of high passes”, is a region in the state of Jammu and Kashmir of Northern India sandwiched between the Karakoram mountain range to the north and the Himalayas to the south. It is one of the most sparsely populated regions in India. Historically, the region included the Indus Valley, the remote Zanskar to the south, and Nubra valleys to the north over Khardung La in the Ladakh mountain range. Ladakh borders Tibet to the east, the Lahul and Spiti to the south, Kashmir to the west, and Central Asia to the north. Ladakh is open for tourist throughout the year, while the best period for tour and trek is from June to October. Most of the trekking routes are closed after November due to heavy snowfall at high passes except the Liker to Kahltsey (Sham) trek. The best period for Chadar trek is from January to Mid-March. In the Leh-Ladakh and Lahaul-Spiti region, where monsoon does not have much effect, one can trek from the middle of June to the beginning of October. First week of May to end June is the pre-monsoon season. Passes below 4300 mts. are generally open for trekking from early June while the passes above 4300 mts. are negotiable only after monsoon rains are over.