Promottra Singha. Benegenaati Satra: It is a reliquary of antiques of cultural importance and an advanced centre of performing art. Muraridev, the grandson of Sankaradeva's stepmother was the founder of the Satra. The royal raiment belongs to the Ahom king Swargadeo Godadhar Singha, is made of gold. Also preserved is the royal umbrella made in gold. Shamaguri Satra: The satra is famous for the mask making in India. Bihimpur satra Satra: These satras are the treasure house of "Borgeet" Matiakhara, Satriya Dances (Jumora Dance, Chali Dance, Notua Dance, Nande Vringee, Sutradhar, Ozapali, Apsara Dance, Satria Krishna Dance, and Dasavater Dance), all promulgated by Srimanta Sankardeva. It has become a center for shuddhi in the Northeast of India, due to the efforts of Pitambar Deva Goswami. Ecology A wetland, Mājuli is a hotspot for flora and fauna, harbouring many rare and endangered avifauna species including migratory birds that arrive in the winter season. Among the birds seen here are the greater adjutant stork, pelican, Siberian crane and the whistling teal. After dark wild geese and ducks fly in flocks to distant destinations. The island is almost pollution free owing to the lack of polluting industries and factories and also the chronic rainfall. The island is under threat due to the extensive soil erosion on its banks. The reason for this magnitude in erosion is the large embankments built in neighbouring towns upriver to prevent erosion during the monsoon season when the river distends its banks. The upshot is a backlash of the tempestuous Brahmaputra's fury on the islet, eroding most of the area. According to reports, in 1853, the total area of Mājuli was 1,150 km2 and about 33% of this landmass has been eroded in the latter half of 20th century. Since 1991, over 35 villages have been washed away. Surveys show that in 15–20 years from now, Mājuli would cease to exist. To save the island, the Union Government of India has sanctioned ₹ 2.50 billion (US$55 million) for the protection of the island. The water resource department & The Brahmaputra Board have been struggling to solve the erosion problem of this island for the last three decades but without much success. Recently it was suggested that only a four-lane highway protected by concrete mat along the southern boundary of Majuli and the excavation of river bed of the Brahmaputra River can solve the problem. The project also includes