800 ( 500 ), 1979. 800 बर्ग किमि ओनसोलाव गोसारनाय (गाहाय ओनसोल 500 बर्ग किमि), बे सेंसुरिया आरोबाव 1979आव हादोरारि हाग्रामानि थामान होजादोंमोन।
Spread over an area of 800 sq km (core area 500 sq km), the sanctuary was further given the status of a National Park in 1979.