Amidst lofty blue hills of the Patkai mountain ranges and vast undulating meadows along the turbulent river, Noa-dehing lies a sprawling valley of unexplored pristine “tropical wet evergreen forest” in Changlang Distt. Of Arunachal Pradesh. This is the Namdapha National park.

Namdapha, the 15th “Tiger Reserve” of the country, has derived its name from a tributary called “Namdapha” joining the the turbulent river, Noa-dehing at Embyong. The river originates from Myanmar flowing right across the park from east to west direction. The park has altitudinal variation from 200m (MSL) to 4500m at Daphabum , where snow capped ruggedness over the vast forest expanse of 7 different “forest types” ranging from “wet evergreen” to “alpine scrub”. Perhaps, no park and sanctuaries in the world has such variations as Namdapha which has never in the past under rules and exploitation of the Mongols, the Moghuls, the British or Indian Maharajas,geographical formation of Patkai Hills adjoining to Eastern Himalayan foothills, vast undulating meadows, swift flowing rivulets crisscrossing the park and open grasslands all supported seemingly the endless variety of flora and fauna of Namdhapa, making it a part to the world’s 12th Bio-diversity Hotspot.

Namdapha, an unexplored forest expanse of enchanting beauty and lush green vegetation is a true ‘wilderness’. Undergrowth is thick and interwined making it impenetrable cobwebs of vaious species of cane, bamboo, wild banana, climber, shrubs and herbs. The grandeur of ‘ tropical wet evergreen forest’ is simply awesome and exciting. There are 150 timber species of which the gigantic Hollong, Hollock, Mekai, Jutuli, Champa and Bhola are important. The rare pine tree species of Pinus merkusai and Abies delavavi found in Namdapha are not viable elsewhere in India. Among the many orchids and medicinal plants, the rare Bluevanda and coptis teeta are worth mentioning

Namdpha is serene and green with teeming wildlife, where nature has retained its glory at her best. It is the only National Park where all the 4 big cats i.e., Tiger, Leopard, SnowLeopard and Clouded leopard are recorded to be found. It is also the habitat of the endangered ‘mammal’ species like Slow Lorries and Hollock Gibbon the only ‘ape’ species of India. Of the many other animals in Namdapha are the elephant, black bear, deers and various reptiles viz cobra,viper,krait, pyton etc. Among the avi-fauna the most notable are the White Winged Wood Duck, whole variety of Pheasants and of course, the Great Indian HornBill. The rare and most endangered leaf deer [M. putaoensis] and black barking deer [M. crinifron] found only in China and Myanmar have been discovered in Namdapha. The tiger and leopard population which were 52 and 35 only in 1995 have increased to 61 and 70 respectively by the year 2001 due to effective conservation measures