Arunachal Pradesh, the 'Land of the Dawn-lit-Mountains' lies at the north-eastern tip of India, forming the last of the seven sisters ( The Great Himalayan Range ). In India dawn first illuminates Arunachal's border with China. To its west is Bhutan and on its southern end it touches Assam, Nagaland and Burma. A part of the Eastern-Himalayan ranges, Arunachal Pradesh covers about 83,000 sq km. The climate varies from sub-tropical in the south to alpine in the north. Arunachal Pradesh, is covered more than sixty percent by evergreen forests, with numerous turbulent streams, roaring rivers, deep gorges, lofty mountains, snow-clad peaks and thousands of species of flora and fauna. There are five major rivers - Kameng, Subansiri, Siang (which flows as the Brahmaputra in Assam), Lohit and Tirap. A mountanious terrain and a strong current makes the rivers ideal for rafting and angling. Once described as the 'Hidden Land', Arunachal Pradesh has now opened its doors to outsiders. The people of Arunachal Pradesh are of Mongoloid stock, with a glorious heritage of arts and crafts, and enchanting folk songs. The greatest attraction of the state is its dazzling array of flora and fauna in a habitat that combines glacial terrain, alpine meadows, and sub-tropical rain forests. Places of tourist interest in the state include Bomdila, Tawang and the nearby Buddhist monastery, which happens to be the largest in India. Itanagar is famous for its excavated ruins of the historical Ita Fort, and the attractive Gyaker Sinyi or the Ganga Lake. Malinithan and Bhismaknagar are the two important archaeological sites in the state, and Parashuram Kund is a prominent pilgrimage site. Namdapha Wildlife sanctuary in the Changlang district is home to the rare Hoolock gibbon.