The Everest Base Camp trek at an elevation of 5,364 m. is one of the most popular trekking routes in the Himalayas. Trekkers usually fly from Lukla to save time and energy before beginning the trek to the base camp. From Lukla, climbers trek upward to the Sherpa capital of Namche Bazaar 3,440 metres, following the valley of the Dudh Kosi river. It takes about two days to reach the village, which is the central hub of the area. Typically, at this point, climbers allow a day of rest for acclimatization. They then trek for another two days to Dingboche 4,260 metres before resting for another day for further acclimatization. Most trekkers use the traditional trail via Tengboche monastery, but recently, the high trail via Mong La and Phortse has gained popularity due to the impressive views it offers. Another two days takes them to Everest Base Camp via Gorakshep, the flat field below Kala Patha, 5,545 metres and Mt. Pumori.