The Chitwan National Park, situated 165 km overland or 25 minutes by air to the south-west of Kathmandu, is one of the richest safari destinations in Asia. Spread over an area of 932 sq. km, it offers a unique ecosystem encompassing hills, ox-bow lakes, flood plains, tall grasslands and thick jungles dominated by sal trees (Shorea Robusta). Chitwan is home to more than 40 species of wild animals, many of which are rare and endangered. They include the One-Horned Rhino, Royal Bengal Tiger, Gharial Crocodile, Wild Elephant, Four-Horned Antelope, Striped Hyena and the Gangetic Dolphin. Over 450 species of birds like the Bengal Florican, Giant Hornbill, Sarus Crane, the Racket-Tailed Drongo and other exotic varieties delight bird watchers. Jungle activities include sightseeing on elephant-back, canoe rides on the rivers, jeep drives, jungle walks and village tours.