This trek gives you "the grand tour" of the famous Khumbu Valley. This is a strenuous trek leading to Gokyo Lake and over the Cho La (La = pass) at 17777 ft / 5420 m. making a circuit of Tawache (20885 ft/ 6367 m.) and Cholatse (17844 ft. / 6440 m.). Emerging into the Khumbu valley above Lobuje the trail continues up to Kalapattar and then back to Lukla via Thyangboche and Namche Bazaar. Strenuous trekking is continuously rewarded with dramatic Himalayan scenes, including four of the world's eight highest peaks: Cho Oyu (26744 ft/ 8153 m.), Makalu (27798 ft / 8475 m.), Lhotse (27880 ft/ 8500 m.) and Everest (28028 ft / 8848 m.). Breathtaking mountain vistas are complemented by visits to Sherpa villages, homes and monasteries offering you an insight into the quiet but, culturally vibrant Sherpa way of life.