Sagarmatha Zone

Sagarmāthā Zone () or Sagarmatha Anclal () was one of the fourteen zones of Nepal until the restructuring of zones into provinces. The headquarters of Sagarmatha is Rajbiraj. "Sagarmāthā" is a Nepali word derived from सगर (sagar) meaning "sky" and माथा (māthā) meaning "head".
It includes mountain districts of the Himalayas (including the world's highest peak Mount Everest) in the north, hill districts in the center, and valley districts of the Terai in the south. It is bordered by China to the north, India to the south, the Koshi Zone to the east and the Janakpur Zone to the west.
Sagarmāthā is divided into six districts:
The main city of the Sagarmāthā Zone was Rajbiraj which was also the headquarters. Other towns of the Sagarmāthā hill area were Katari, Okhaldhunga, Diktel, Salleri and Namche Bazaar; while Kathauna, Lahan, Fatepur, Rajbiraj and Siraha are in the outer Terai. Triyuga is an emerging city in the zone.
Name Origin.
Sagarmāthā Zone took its name from "Sagarmāthā" which is the Nepalese name for Mount Everest (Sagarmāthā), which is located in the very north of the zone within the Sagarmatha National Park (1,148 km²) in the Solu Khumbu district of Nepal. 
Sagarmāthā means "the Head in the Great Blue Sky" derived from सगर (sagar) meaning "sky" and माथा (māthā) meaning "head" in the Nepali Language.