It is bounded in the north by the Tent Peak and the ridge of the Zemu glacier. The eastern boundary of this park comprises of the ridge of the Mountain. The southern boundary includes Mount Narsing and Mount Pandim. The western boundary comprises of the mighty Kanchenjunga which presides over its namesake park and the Nepal Peak. Being bounded by such formidable features, it is no wonder that the park has remained ecologically untouched and therefore has provided a natural protection to the flora and fauna it shelters. The fauna includes the Snow Leopard, Himalayan Black Bear, Red Panda, Baking deer and many other species. Many places in this park have perhaps never been trod by man and it is very likely that new species may be discovered here.- Sanctuaries in Sikkim
The Khangchendzonga National Park (High Altitude) extends from the cold desert of Lhonak valley and the ridges of Lachen in the North District to the historical place at Yuksom. The western boundary of the park runs along the international boundary with Tibet. The park Covers area of 1784 sq km. and occupies as much as 25.14% of the land area of Sikkim. This area lies within reserved forest and expect for a small Tibetan village community at Tshoka, there are no other village settlements inside the park. The park has spectacular wilderness with one of the world's highest peaks towering above virtually undisturbed forests. This park is the home to Snow leopard , Clouded leopard, Himalayan Black Bear, Red Panda, Blue Sheep, Serow, Himalayan Tahr, Goral ,Musk Deer, Barking Deer, Impeyan Pheasant, Satyr Tragopan, Blood Pheasant, Osprey, Lammergeier, Sunbirds etc.
Fambong Lhu wildlife sanctuary is located at a distance of 25km from Gangtok town, the capital of Sikkim. The famous Rumtek Monastery is located at the southeastern boundary. The snowy ranges of Kanchendzonga are clearly visible from Golitar the buffer area of the sanctuary towards northwest. Elevation starts from 1524 m and the highest peak Tinjurey, a triangular hiltop is at 2749m. The ridges further connect fambong Lho peak and Rogorathai peak. There are bridle paths constructed along the ridges up to Rumted peak. The main vegetation is Oak Quercus sp., 'Katus' Canstanopsis sp., 'Champ' Michelia sp., ' Kawlo' Machilus sp., ' Kimbu' Morus sp., thicket bamboo forests, ferns and a lone fir Tsuga dumosa at Tinjurey. In the lower reaches of the sanctuary there are tree ferns Cyathea sp. Rhododendron arboreum interspersed with 'Angeri' Lyanio ovalifolia is seen gregariously on high hills and saddles. The sanctuary is also home to a large number of wild orchids, mosses and lycopodium sp.
Maenam Wildlife Sanctuary translates to “Treasury of Medicines” is located in South Sikkim above Rabongla town and covers an area of about 3,500 hectares with its highest point being at Maenam. The sanctuary is home of many medicinal plants and shelters Red Panda, Common Hill Partridge, Magpies, Black Eagle, Barking Deer, Marbled-Cat, Leopard-Cat, Goral, Serow, Civet-Cats, Blood Pheasant, Blue necked Pitta, Sunbirds and many other animals of the temperate forest.
Shingba Rhododendron Sanctuary is located in Yumthang, North Sikkim. The sanctuary has wide variety of rhododendrons.Valley known for its alpine meadow and hot springs. The sanctuary stretches from Chamzomei Tso upto Lava pass. The Yumthang Chu (river) flows through the sanctuary. The sanctuary houses around 40 species of Rhododendrons and shrubs. The rarest Banded Linsang (tiger-civet) was also spotted in this region. Lachung village is the last settlement before reaching this sanctuary. Government has forest rest house in this area, and one at Yumthang, which can be used for 1 or 2 days halt. This sanctuary also contains ground flora such as primulas, potentillas, gentians, saxifrages, poppies and aconites. Brown Trout were introduced into Yumthang Chhu at Phunyi in 1978 and have been flourishing since
Kyongnosia Alpine Sanctuary is located near Tsomgo Lake. Sanctuary is rich alpine flowers such as Premolars Rhododendrons and Poppies, and shelters wide variety of Birds such as redstarts, forktails, blue whistling thrush and wild animals like Musk Deer, Serow, Himalayan Black Bear, Red Panda, Lesser Cats, Blood Pheasant, Satyr Tragopan, Impeyan Pheasant. The blooming timing of the flowers are slightly varied in the region, after the blooming season sanctuary awaits its first snowfall. Many highly endangered plants with great medicinal value are found here such as Podophyllum emodii, Aconitum spp. and Nardostachys grandiflora. Visitors may expect to see signs of musk deer, serow, goral, common langur and the red panda in the higher ranges of the sanctuary. There are records of leopard and black bear too.
Barsey Rhododendron Sanctuary (West Sikkim) is located in west of Sikkim and stretches about 104 squar kilometers to the north. The sanctuary was established in 1998. This sanctuary is home for all 600 varieties of Rhododendrons out of 1000 available in Sikkim. Sanctuary include Leopard Panthera pardus, Leopard Cat Prionailurus bengalensis, Yellow-throated Marten Martes flavigula, Masked Palm Civet Paradoxurus hermaphroditus, Goral Nemorhaedus goral, Barking Deer Muntiacus muntjak, Asian Black Bear Ursus thibetanus, Red Panda Ailurus fulgens, Crestless Porcupine Hystrix brachyura, and Himalayan Mouse- Hare Ochotona roylei. There are unconfirmed records of the Tibetan Wolf Canis lupus chanco and Wild Dog Cuon alpinus.