Nokrek has a remnant population of the red panda that has generated curiosity across the world. One was accidentally shot by Dr J. Lao in 1960s. Nokrek is also an important habitat of the Asian elephant. The park had eight species of cats, ranging from tiger to marbled cat but the current status of the former is uncertain. There are seven species of primates in Nokrek. The rare stump-tailed macaque is frequently seen near the main trek to the peak. The pig-tailed macaque also occurs. Hoolocks are common and their calls could be heard all over Nokrek. Nokrek is also an Important Bird Area. There is a vast range of plants found in the park. A huge canopy of thick, tall and lush green forests cover Nokrek and its environment. The mother germoplasm of Citrus indica have been discovered by science researchers within Nokrek Range. This discovery led to the establishment of the National Citrus Gene Sanctuary-cum-Biosphere Reserve covering an area of forty-seven square kilometres. The area has wild varieties of citrus fruits that provide a gene-pool for commercially produced citrus.
Geography
The entire Biosphere Reserve is hilly. The rock is mainly gneisses, granulites, migmatites, amphibolites and banded iron formation, intruded by basis and ultra-basic bodies. In most of the Biosphere Reserve area the soil is red loam. But sometimes it varies from clayey to sandy loam. The soils in the Biosphere Reserve are rich in organic matter and nitrogen but deficient in phosphate and potash. The area consists of patchy sedimentary rockcomposed of pebble bed, sandstone, and carbonaceous shales. All important rivers and streams of the Garo Hills region rise from the Nokrek Range, of which the river Simsang, known as Someshwari when it emerges into Bangladesh at Baghmara, is the most prominent.
Notable sites
Notable sites in the park include the Nokrek Peak and Rongbang Dare Water Fall. Balpakram National Park and Siju Cave is located very close to the Napak Lake near the Simsang Rivergame reserve which is south east to Nokrek National Park. The cave is filled with water and is miles long.
