इउनेस्कोआ बेनि बाहायनायखौ नायबिजिरदों आरो फिन गावनि 36 थि सरासनस्रा आफादाव थाम नबेम्बर , 2011 आव फोसावो ।
UNESCO `s studied its feasibility and declared it in its 36th General Assembly on third November 2011 .