The Biosphere Reserve includes an additional 2,570 km ² , and a further 914 km ² are included in a `` Cultural Zone '' ( which also is afforded a level of protection ) , bringing the total area up to 18,811 km ² .
The Biosphere Reserve includes an additional 2,570 km ² , and a further 914 km ² are included in a `` Cultural Zone '' ( which also given protection ) , bringing the total area up to 18,811 km ² .