Everest Base Camp Trek is an excellent and most demanding kind of adventure trekking activity of Nepal, which is great popular in the world. Mt. Everest is the tallest mountain of the world, that's why also this trek is fabulous in all over the world. Different trekking company offering different / different way along different Everest base camp trek route. But normally Everest base camp trek route first goes through the highlands of Solu before reaching the higher Khumbu region. The route passes through regions with great topographical and climatic differences, from the hot terai to the glacier world of Khumbu. In between lie the Siwalekh Hills and the Mahabharat Range with the Sun Koshi Valley.