Knancanjunga Conservation Area belt lies below Mt. Kanchanjunga. The region with its alpine grasslands, rocky outcrops, low river valley, temperate and sub-tropical forest is situated in Taplejung district that borders with the Tibetan Autonomous Region of China. The KCA has been selected as one of the 200 Global eco regions recognized by World Wildlife Fund.

Ten species among Nepal's 20 indigenous gymnosperms and 15 among Nepal's 28 endemic flowering plants are found in this region. In additional, almost 30 varieties of rhododendron species and 69 varieties of orchids are found here. The area is splashes with colors every spring with wild displays of rhododendrons, orchids, lilies, primula and other flowers.

Wildlife includes endangered snow leopard, Himalayan black bear, musk deer, red panda, blue sheep and rhesus macaw. About 202 species of different birds including Impheyan pheasant, red-billed blue magpie, shy drongo are found in the area. The region can be reached via Basantapur in Dhankuta district or Birtamod in Jhapa district. The area can also be reached through Dharan, which is 40 kilometers north from Biratnagar. Yet another option is to fly to Biratnagar and then to Sukhetar in Taplejung district form where the region can be trekked. Tourist facilities are availanle in Dharan, Dhankuta and Biratnagar.