it lies 120 km, south-west of kathmandu with area of 952 sq. km. It was established in 1973 and was later declared a world Heritage site by UNESCO in 1984. sub-tropical decidious riverline forest, wooded hills and grasslands contain one-fourth of the world's endangered great one-horned rhinos as well as te royal Bengal tiger, leopards, monkeys and the splended gaur bison more than 940 species of birds are found in this omithologist's heaven,including the giant hornbill, the rare Bengal floricvan and the paradise flycatcher.