Nepal is divided into three principal physiographic belts known as Himal-Pahad-Terai.{{efn|This trichotomy is a prominent feature of Nepali discourse and is represented in the Emblem of Nepal, with blue and white peaks signifying Himal, green hills below them signifying Pahad and the yellow strip at the bottom signifying the Terai belt.}} Himal is the mountain region containing snow and situated in the Great Himalayan Range; it makes up the northern part of Nepal. It contains the highest elevations in the world including {{convert|8848|m|ft|0}} height Mount Everest (Sagarmāthā in Nepali) on the border with China. Seven other of the world's eight-thousanders are in Nepal or on its border with China: Lhotse, Makalu, Cho Oyu, Kangchenjunga, Dhaulagiri, Annapurna and Manaslu. Pahad is the mountain region that does not generally contain snow. The mountains vary from {{convert|800|to|4000|m|ft|-2}} in altitude, with progression from subtropical climates below {{convert|1200|m|ft|-2}} to alpine climates above {{convert|3600|m|ft|-2}}. The Lower Himalayan Range, reaching {{convert|1500|to|3000|m|ft|-2}}, is the southern limit of this region, with subtropical river valleys and hills alternating to the north of this range. Population density is high in valleys but notably less above {{convert|2000|m|ft|-2}} and very low above {{convert|2500|m|ft|-2}}, where snow occasionally falls in winter. The southern lowland plains or Terai bordering India are part of the northern rim of the Indo-Gangetic Plain. Terai is the lowland region containing some hill ranges. The plains were formed and are fed by three major Himalayan rivers: the Koshi, the Narayani, and the Karnali as well as smaller rivers rising below the permanent snowline. This region has subtropical to tropical climate. The outermost range of the foothills called Sivalik Hills or Churia Range, cresting at {{convert|700|to|1000|m|ft|-1}}, marks the limits of the Gangetic Plain; however broad, low valleys called Inner Terai Valleys ({{Lang|ne|Bhitri Tarai Upatyaka}}) lie north of these foothills in several places.