Khumbu (also known as the Everest Region) is located in northeastern Nepal on the Nepalese side of Mount Everest. It is part of the Solukhumbu District, which in turn is part of the Sagarmatha Zone. Khumbu is one of three subregions of the main Khambu(specially Thulung) and Sherpa settlement of the Himalaya, the other two being Solu and Pharak. It includes the town of Namche Bazaar as well as the villages of Thame, Khumjung, Pangboche, Pheriche and Kunde. The famous Buddhist monastery at Tengboche is also located in the Khumbu.
The Khumbu's elevation ranges from 3,300 metres (11,000 feet) to the 8,848 m (29,029 ft) summit of Mount Everest, the highest place on Earth. Sagarmatha National Park (above Monju) and the Sagarmatha National Park Buffer Zone (between Lukla and Monju) are enclosed within the Khumbu region.
The Khumbu is a glacier believed to be the result of the last great Ice Age, ~500,000 years ago.
Information based on http://en.wikipedia.org/wiki/Khumbu